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Question Description
Question 1
Evaluate the function at the indicated value of x. Round your result to three decimal places.
Function: f(x) = 0.5^x Value: x = 1.7
0.308 

1.7 

0.308 

0.5 
Question 2
Solve for x. 3x = 81
7 

3 

4 

3 
Question 3
Logarithms are the inverse of exponentials.
True
False
Question 4
The Logarithm Quotient Rule states:
logb(x / y) = logb(x) + logb(y) 

logb(x / y) = logb(x) – logb(y) 

logb(x y) = y ∙ logb(x) 

logb(c) = 1 / logc(b) 
Question 5
Use the properties of logarithms to expand the expression as a sum, difference, and/or constant multiple of logarithms. Assume all variables are positive.
log3 9x
log3 9 * log3 x 



log3 9 – log3 

none of these 
Question 6
Select the graph of the function. Indicate which graph is correct: 1st, 2nd, 3rd, or 4th
f(x) = 5x1
Question 7
Evaluate the function at the indicated value of x. Round your result to three decimal places. Show your work
Value: x=2
Question 8
The exponential equation y=bx is equivalent to the logarithmic equation x=logby
True
False
Question 9
Use the OnetoOne property to solve the equation for x.
e(3x+5) = e6
x = 1/3 

x2 = 6 

x = 1/3 

x = 3 
Question 10
Write the logarithmic equation in exponential form.
log8 64 = 2
82 = 16 






Question 11
Write the exponential equation in logarithmic form.
43 = 64
log64 4 = 3 






Question 12
The given xvalue is a solution (or an approximate solution) of the equation.
42x7 = 16
x = 5
True
False
Question 13
Find the magnitude R of each earthquake of intensity I (let I0=1). (Hint: R=log (I/I0)
I = 19000


5.28 




Question 14 – show you work
pH is a measure of the hydrogen ion concentration of a solution. It is defined as the negative logarithm of the hydrogen ion concentration. The equation is:
pH = – log [H+]
If an acid has an H+ concentration of 104, what’s the pH?
Question 15 – show your work
A general formula for exponential Growth can be given by:
A = P ekt
In your textbook, or using another reliable source, research what values, P, A, k and t represent and write your answer. (Hint: What do each of the variables stand for?)
Question 16 – show your work
Continuously compounded interest means your principal is earning interest and you keep earning interest on the interest earned. Research the formula for Continuously Compounded Interest and write it below.
Question 17
$2500 is invested in an account at interest rate r, compounded continuously. Find the time required for the amount to double. (Approximate the result to two decimal places.)
r = 0.0570
13.16 years 

10.16 years 




Question 18 – show your work
Write Eulers Number (e) to three decimal places.
Question 19 – show your work
Exponential functions often involve the rate of increase or decrease of something such as a population, for example. If there is a population increase, it is a _______ function and when there is a decrease, it is a ________ function.
Question 20
Solve for x: log(3x−2)−log(2)=log(x+4)
10 

0 

4 

12 
Question 21
Evaluate the function at the indicated value of x. Round your result to three decimal places.
Function: f(x) = 0.5x Value: x = 1.7


1.7 

0.308 

0.5 
Question 22
Select the graph of the function. Indicate which of the graphs below is the correct one: 1st, 2nd, 3rd, or 4th.
Question 23
$5000 is put into an account that pays 4% interest compounded continuously. How much will be in the account after 3 years? Round the answer to the nearest whole number.
5637 

5637.5 

5638 

5638.5 
Question 24 – show your work
Given the equation: y = 50(2.5)x, what is the value of y (to the nearest tenth) when x = 3? Next, tell us if the equation represents growth or decay.
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