Which of the following is NOT an example of an exponential function?
(A) y=3(2.1)^x (B) y=14e^n
(C) f(x)= 13x^5 (C) g(x)= 6.5^(x-1)
What is C
100
The inverse of an exponential function.
What is logarithm
100
The general equation for inverse variation
What is y=k/x
100
Define a rational expression
What is a fraction with a polynomial in the numerator and denominator
200
Rationalize the denominator of 3/(square root of 7)
What is 3sqrrootsof7/7
200
The population of Philadelphia is 8500 and is growing at a rate of 3.2% per decade. Which of the following is an expression for the population of Philly after n decades?
(A) 8500(1.032)^n (B) 8500(1.32)^n
(C) 8500(3.2)^n (D) 8500 + (3.2)^n
What is A
200
Rewrite the following in exponential form:
log base 5 of 10 =x
What is 5^10=x
200
If y varies inversely as x and y is 30 when x is 5 find the constant of variation.
What is k=150
200
What is the domain of the function y=(3x)/(x^2-4x+4)
What is x cannot =2
300
Simplify cuberoot(32x^3y^5z^21)
What is 2xyz^7 cube roots of 4y^2
300
What does it mean if you are asked to find the Effective Yield on an investment?
What is the rate.
300
Solve log base x of 8 is 1/3
What is 512
300
Describe joint variation
What is more than one direct variation relationship.
300
What is the LCD for the following:
(x+3)/(x^2-4) + (2x)/(x-2)
What is x^2-4
400
Solve: cuberoot (5x-8) = (12-3x)^(1/3)
What is 2.5
400
Gustav (yes, Gustav) invests $5000 at an 11.3% interest rate compounded continuously. Find the final amount of money Gustav will have after 10 years.
What is $15478.28
400
ln(2x-4)+ln8=ln(32-11x)
What is 2.37
400
Which of the following is NOT an example of inverse variation
A) y=2x/7
B)y=2/7x
C) y=2/7x^2
D) y=11/x^3
What is A
400
Simplify:
x(2x+1)/(4x^3+2x^2)
What is 1/2x
500
5squareroots of (x-15)=-30
What is no solution
500
A question that models the following equation:
9500=4750(1+r)^3
What is: A $4750 investment is made and after three years it doubles. What is the effective yield.
500
7e^(5x+3)=4900
What is .71
500
The frequency of a radio wave varies inversely as its wavelength. If a 200 meter wave has a frequency of 3000 kilocycles, what is the wavelength of a wave that has a frequency of 2000 kilocycles?