Quiz about Exponent Test Review

Question 1

Which of the following has a domain of $$\left(-\infty,\infty\right)$$ and range of $$\left(-\infty,3\right)$$

Accepted Answer

$$y=-4^x+3$$

Answer

$$y=\frac{1}{4}^x+3$$

Answer

$$y=-4^x-3$$

Answer

$$y=4^x-3$$

Question 2

An acidophilius culture containing 150 bacteria doubles in population every hour. In other words, after 1 hours there will be 300 bacteria. The growth of the bacteria is given by the formula $$y=150\left(2\right)^x$$

Which of the following correctly identify the variables? (PICK 2 ANSWERS)

Accepted Answer

x: # of hours

Accepted Answer

y: amount of bacteria

Answer

y: # of hours

Answer

x: population of bacteria

Question 3

An acidophilius culture containing 150 bacteria doubles in population every hour. In other words, after 1 hours there will be 300 bacteria. The growth of the bacteria is given by the formula $$y=150\left(2\right)^x$$

Which of the following will there be at least 19,200 bacteria?

Accepted Answer

8 hours

Answer

6 hours

Answer

4 hours

Answer

2 hours

Question 4

Which of the following have a domain of $$\left(-\infty,\infty\right)$$ ?

***There may be more than one answer***

Accepted Answer

Accepted Answer

Accepted Answer

Accepted Answer

Exponent Test Review

37 questions

Determine which functions are doubling and tripling:

Match each exponent rule.

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