Modeling with Exponential and Logarithmic Equations — Unit test

Question 1

An initial investment of $200 is now valued at $350. The annual interest rate is 8% compounded continuously. The equation represents the situation, where t is the number of years the money has been invested. About how long has the money been invested? Use a calculator and round your answer to the nearest whole number.

Revolt · Accepted Answer

7 years

Question 2

What is the solution of ?

Revolt · Accepted Answer

9

Question 3

Identify the equation that translates five units down.

Revolt · Accepted Answer

y = l n (x) minus 5

Question 4

A scientist writes the equation to model the growth of a certain bacteria in a petri dish, where N represents the number of bacteria after h hours. After approximately how many hours will 450 bacteria be present? Round your answer to the nearest whole number.

Revolt · Accepted Answer

6 hours

Question 5

What is the range of the function graphed below?

Revolt · Accepted Answer

y greater-than 0

Question 6

Which of the following shows the graph of y = –(2)x – 1?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/evresources/3111-10-01/mc022-2.jpg

Question 7

Which function is shown in the graph below?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/evresources/3111-10-01/mc026-3.jpg

Question 8

Jerome solved the equation below by graphing.Which of the following shows the correct system of equations and solution?

Revolt · Accepted Answer

; x = 4

Modeling with Exponential and Logarithmic Equations — Unit test Answers

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