3,408 Answered Questions for the topic College Algebra

College Algebra

05/05/15

#### Express the equation in exponential form (a) ln 2 = x is equivalent to e^A=B

A= B=2   2. ln x = 3 is equivalent to e^C=D   C=3 D=
College Algebra

05/05/15

#### Use the Laws of logarithms to rewrite the expression

log((x^3 y^8)/z^10) Alog(x)+Blog(y)+Clog(z)   A= B= C=
College Algebra

05/03/15

#### I bought 3 bacon and 4 eggs and paid 12.33 my wife went to the store and bought 3 eggs and 4bacon and paid 14.13

We want to return 3 packages bacon and 3 cartons of eggs how much will be refunded? also they were bought at the same store
College Algebra

04/30/15

#### the length of a rectangle is 5 less than twice the width. Given that the length is x and width is y and the perimeter is 20 cm, perform the following: a) Form a

form a system of equations using variables x and y form an augmented matrix of the system and solve the system find the area of the rectangle
College Algebra

04/28/15

#### let u=lna, v=lnb, w=lnc. for number 1 rewrite each without using the ln function

1.) ln(a2c4/b5)

04/28/15

#### given that log11=1.0414 and log5=.6990, evaluate

1.) log55   2.) log125/121

04/28/15

#### solve the logarithmic equation

1.) log3(x-3)=1+log3(x+1)   2.)lne3x-27=log1

04/28/15

#### solve the exponential equation

1.) 52x-3=7x+9   2.) 2e2x-11ex+5

04/28/15

log2913

04/28/15

log2.97.5

04/28/15

(1/4)-2x=64

#### newton's law of cooling states the temperature of a body at a time t after being introduced into an environment

Newton's law of cooling states the temperature of a body at a time t after being introduced into an environment having constant temperature To is A(t)=To+Ce-kt, where C and K are constants and t is... more

04/28/15

#### carbon 14 is used for carbon dating.

Carbon 14 is used for carbon dating. Carbon 14 decays at a rate of y=Yoe-(ln2)(1/5700)t. If a mummy is found and has exactly 1/3 of its carbon 14 remaining, how long has the mummy been entombed.

04/25/15

#### In an effor to control vegetation overgrowth, 82 rabbits are released in an isolated area Free of predators. After 2 years, it is estimated that the rabbit popu

In an effor to control vegetation overgrowth, 82 rabbits are released in an isolated area Free of predators. After 2 years, it is estimated that the rabbit population has increased to 328. Assuming... more

#### The safe load, L, of a wooden beam of width w, height H, and length l, supported at both ends, varies directly as the product of the width and the square of the

The safe load, L, of a wooden beam of width w, height H, and length l, supported at both ends, varies directly as the product of the width and the square of the height, and inversely as the length.... more

04/24/15

#### A population grows exponentially at an annual rate given by r=0.03. What will the population be in 75 years if the initial population is 2500?

A population grows exponentially at an annual rate given by r=0.03. What will the population be in 75 years if the initial population is 2500?

#### The value of a machine, V, at the end of t years is given by V=C(1-R)t , where C is the original cost and r is the rate of depreciation. Find the value of a mac

The value of a machine, V, at the end of t years is given by V=C(1-R)t , where C is the original cost and r is the rate of depreciation. Find the value of a machine at the end of 4 years if the... more
College Algebra

04/24/15

y=(4x^2-9x)/2x+6

#### A stone dropped from rest travels 230 feet in the first 5 seconds. How far will it have fallen at the end of 7 seconds? (Round to the nearest Integer)

A stone dropped from rest travels 230 feet in the first 5 seconds. How far will it have fallen at the end of 7 seconds? (Round to the nearest Integer)

#### The revenue function is given by R(x) =x*p(x) dollars where x is the number of units sold and p(x) is the unit price. If p(x)=50(5)-x/5 find the revenue if 10 u

The revenue function is given by R(x) =x*p(x) dollars where x is the number of units sold and p(x) is the unit price. If p(x)=50(5)-x/5 find the revenue if 10 units are sold. Round to two decimal... more
College Algebra

04/23/15

#### find the effective rate of interest for 10 2/3% compounded quarterly

I can not find the rate of interest
College Algebra

04/23/15

#### find the domain (in interval notation) and intercepts (as ordered pairs), plot the function and verify answer: f(x)=log7(2x+3)-log7(x)

I ca not find the domain in interval notation and the intercepts as ordered pairs.
College Algebra

04/23/15

#### solve for x: log(8x+1) = 1+log(x-2)

I do not know how to find x in this problem.

04/22/15

#### log(log x)=4

It is supposed to be solved without a calculator! Please help! I am so confused. I thought the answer would be 10,000 (10^4), but it is not correct.
College Algebra Logarithms

04/22/15