4,322 Answered Questions for the topic College Algebra

College Algebra Chemistry

12/02/19

The half-life of strontium-90 is 28 years. How long will it take a 60-mg sample to decay to a mass of 26.4 mg?
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College Algebra

12/02/19

college Algebra
Give the function g (x) = 5-x^2, simplify g(x + h) -g(x), h=0 h
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College Algebra

12/02/19

How long will it take for an investment to triple in value if it earns 9.25% compounded continuously

Solve the problem round to 3 decimal places
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College Algebra

12/02/19

Finding the cost for each pound of jelly beans and each pound of almonds

A store is having a sale on jelly beans and almonds. For 2 lbs of jelly beans and 6 lbs of almonds the total cost is $24. For 5 lbs of jelly beans and 3 lbs of almonds the total cost is $21. Find... more
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12/01/19

How to solve: A movie theater has a seating capacity of 355. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults.
A movie theater has a seating capacity of 355. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults. There are half as many adults as there are children. If the total... more
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College Algebra Math Algebra 2 Algebra

12/01/19

Exponential Decay
A patient is given anesthesia for a medical procedure. An equation that can model the concentration of anesthesia in the bloodstream after t hours is: f(t)=Ae-ktAssume that after 1 hour the... more
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College Algebra

12/01/19

College Algebra
The rectangular pasture shown below is to be fenced in along a riverbank. If 288 feet of fencing is to enclose an area of 9,856 square feet, find the dimensions of the pasture. (Let the length... more
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College Algebra

11/30/19

Making an equation from a word problem
When buying groceries at the store for this dinner, you can spend no more than $100. Some costs are fixed, like spices and piecrusts. That total comes to $65. The turkey, however, is priced per... more
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College Algebra

11/30/19

Linear equation word problem
Before we can make the mashed potatoes, we need to boil some water. The water starts out at room temperature, 70° F, and increases by 50° F per minute. Create a linear equation using time t (in... more
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College Algebra

11/30/19

1) What is the concentration of the drug in the bloodstream at t = 8 hours?
When a certain prescription drug is taken orally by an adult, the amount of the drug (in mg/L) in the bloodstream at t hours is given by the function y = f(t) shown in the graph.
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College Algebra Algebra

11/29/19

Calorie count of a one-eighth of pie

Using the calorie count of one-eighth of a 9-in. pie, we find that the number of calories in a piece of pecan pie is 221 less than twice the number of calories in a piece of lemon meringue pie. If... more
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College Algebra Algebra 2

11/29/19

The total cost to rent 8 chairs and 4 tables is $45. The total cost to rent 3 chairs and 2 tables is $21. What is the cost to rent each chair and each table?

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College Algebra

11/29/19

College Algebra Question
For f(x)equals=7x−5 and ​g(x)equals=5x−7​, check whether (f◦​g)(x) is equivalent to (g◦​f)(x).​(f◦​g)(x)= ​(Simplify your​ answer.)
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College Algebra

11/27/19

If 250 mg of a radioactive element decays to 210 mg in 48 hours, find the half-life of the element. (Round your answer to the nearest whole number.)
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College Algebra Algebra 2

11/27/19

PLEASE HELP ALGEBRA
Trey borrowed a total of $3000 from two student loans. One loan charged 3% simple interest and the other charged 2.5% simple interest, both payable after graduation. If the interest he owed... more
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College Algebra

11/25/19

College algerbra

A certain radioactive isotope has a​ half-life of approximately 1250years. How many years to the nearest year would be required for a given amount of this isotope to decay to 25​% of that​ amount?
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College Algebra

11/24/19

find y if ln y=0.926
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College Algebra

11/24/19

How to find the number of tickets for sale at $24 and $40?
A 6000-seat theater has tickets for sale at ​$24 and ​$40. How many tickets should be sold at each price for a sellout performance to generate a total revenue of $179,200​?
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College Algebra Algebra 2

11/24/19

The height of a triangle is 4 feet greater than the base. The area of the triangle is 336 square feet. Find the length of the base and the height of the triangle.
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College Algebra Graphing Graph Transformation

11/23/19

Understanding Graphing Transformations
I can not understand how to graph equations using the transformation properties of a graph. I have been trying to get it to line up on the MyMathLab program and keep getting a wrong answer.How do... more
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College Algebra

11/23/19

A 12 foot board is cut into 2 pieces
A 12 foot board is cut into 2 pieces. One piece is three times as long as the other. How long is each piece?
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College Algebra

11/23/19

Amount invested

the given amount of annual interest is earned from a total of $11,000 invested in two funds paying simple interest. write and solve a system of equations to find the amount invested at each given... more
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College Algebra Math

11/23/19

Math College Algebra
A mill in a town with a population of 400 closes and people begin to move away. Find a possible formula for the number of people P in year t if each year one-fifth of the remaining population leaves.
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College Algebra Math Geometry Statistics

11/22/19

A single card is drawn from a standard deck. Find the probability of the following event. (Enter your probability as a fraction.) Drawing a black card or a face card
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College Algebra Math Geometry Statistics

11/22/19

A single card is drawn from a standard deck. Find the probability of the following event. Drawing a queen or a face card
Addition and complement rule studying
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