01/06/15

exponential decay and logarithm
The inverse of exponential growth function y=a^x is the logarithmic function y=log_a(x). But is there an inverse for a decay exponential function y=a^(-x)? and how its graph would be?
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01/06/15

question in description
Molly is supposed to call her friend every Thursday night. Sometimes they have a lot to talk about, other times not so much. There are two phone companies she can use: TCC charges $0.10 per minute... more
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01/05/15

Carol has a part time job mowing lawns
 if it takes carol 1.25 hours to mow a 50,000 square foot lawn, how long will it take her to mow a lawn that is 300 feet wide and 200 feet long
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01/05/15

PRE_CALC question plzz help
an olympic athlete ingests an illegal substance at 10:00 pm Friday evening. The amount of the substance in the athlete's body after t hours is determined by the function f(t)=100-30ln(1+t). If t=0... more
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01/05/15

Algebra Word Problem - See description
Greg drove at a constant speed in a rainstorm for 245 miles. He took a break and the rain stopped. He then drove 104 miles at a speed that was 3 miles per hour faster than his previous speed. If he... more
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01/03/15

5/9 of a town's population is 2015 persons what is the town's population
5/9 of a town's population is 2015 persons what is the town's population        
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01/03/15

the perimeters of the triangles are shown as equal. find the side lengths of each triangle( whole numbers)
a/b:2x+4 a/c:2x b/c:2x+3 p/q:2x p/r:3x+2 q/r:2x
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01/03/15

constructing linear equations word problems
Kitty's mass is 2 1/2 times as much as Fluffy's, and together their total mass is 7.5kg.Write an equation to determine Fluffy's mass, w, in kilograms. Do not solve the equation for w.
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01/03/15

please read this question
it is a mathematics question. so please answer with solution step by step.a hedge boundary needs to be planted around a rectangular lawn 18m long and 12m wide. if 3 shrubs can be planted to grow a... more
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01/02/15

Ben is five times more than two times as old as Cheryl. In 16 years the sum of their ages willbe 112. How old is Cheryl now?
Ben is five times more than two times as old as Cheryl. In 16 years the sum of their ages willbe 112. How old is Cheryl now?
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01/01/15

simplify (m^3 n^2)^5
This is a problem that is in my holt algebra book. It is the ready to go on number 7a please help!!! can you please include step to step on how to do it and the answer. Would appreciate your help... more
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01/01/15

Mr Johnson bought seven armchairs and high stools. he paid a total of $1,650. The armchairs each cost $300 while the high stools each cost half the amount of 1
armchair. This is the question find the number of armchairs he bought.
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01/01/15

Solve for x , equation of a line
1.  Solve for m.    2mn-3=16   2. Gives the coordinates (2,2) and (4,-1) find the equation of the line. 
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12/31/14

Solve the equation 9 = square root of 27(4x + 6). Using complete sentences, explain the strategy used in solving this equation.
Solve the equation 9 = square root of 27^(4x + 6). Using complete sentences, explain the strategy used in solving this equation.
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12/31/14

Please help with word problem written below?
The formula for determining interest compounded monthly is A = P(1 + r over 12)12t, where A represents the amount invested after t years, P the principal invested, and r the interest rate. Jimmy... more
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12/30/14

I need the steps of the solution for this problem please
Mr. Tenorio has a job that pays $45,500 per year with a guaranteed pay increase of $2,000 each year for 10 years. What is the formula for Mr. Tenorio’s salary, S, if he has worked x years?
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12/30/14

Two copies of the same hardcover book and 3 copies of the same paperback book $118.Sally bought 3 of the hardcover books and 2 of the paperback books for $137
The question was find the cost for each type of book thank you 
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12/30/14

How much was invested at each rate?
An amount of money was invested at 5%, and $1,500 more than this amount was invested at 7%. If the combined annual interest was $585, how much was invested at each rate?
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12/30/14

How much was invested in each?
Simon invested $10,000 in stocks and bonds. He earned 6% interest on the stocks and 8% interest on the bonds. The total interest earned on the bonds was $40 less than the interest earned on the... more
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12/29/14

if I loaned 26,500 at 6% interest what is the total interest amount in the end
I loaned my ex $ 26,500 at 6%interest. So how much does he owe me total?  
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12/28/14

need formula for 127 amount divisions in circumference of 6 inch diameter circle...find x and y coordinates for each point like a circle on a graph chart where
need formula for 127 amount divisions in circumference of 6 inch diameter circle...find x and y coordinates for each point like a circle on a graph chart where circle is in center of X and Y axis
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12/27/14

how long would it take $3,100 to grow to $8,800 if the annual rate is 3.5% and interest is compounded monthly?
how long would it take $3,100 to grow to $8,800 if the annual rate is 3.5% and interest is compounded monthly?
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12/27/14

Algebra math word problems
Joe and Nancy decide to take a road trip. The first 96 miles of the drive is pretty easy, while the last 100 miles of the drive is filled with curves. They drove at an average of 9 miles per hour... more
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12/27/14

Find the determinant
1+x   1       1     1 1      1-x     1     1 1       1    1+z    1 1       1      1      1-z
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12/26/14

Writing polynomial functions with complex zeros
How do you write a polynomial function (f) of least degree that has rational coefficients, a leading coefficient of one, and the zeros 5, 5, and 4+i?
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