Question 1

Gwen deposits $7,000 in a savings account with an annual interest rate of 2.5%. What function represents the value of her account after x years? What will her balance be after 9 years?

Accepted Answer

$8742.04

Answer

$7001.24

Answer

$7007.45

Answer

$8740.40

Question 2

The equation f(t) =513,000(1.024)$^t$ models the annual tuition at Cornell University over time, t. By what percent does the tuition increase each year?

Accepted Answer

2.4%

Answer

24%

Answer

1.024%

Answer

1024%

Question 3

Determine if the function below is an exponential growth or decay and explain your reasoning.
g(x) = 4 ⋅ (9/3)$^x$

Accepted Answer

Growth

Answer

Decay

Question 4

Kane Laboratories is studying the impact of various enriched growth mediums on different bacteria. They are currently studying the impact of placing Bacillus Megaterium into a culture of sucrose salts. The table below shows the growth rate of the bacteria during the growth phase. The generation time for Bacillus Megaterium is 25 minutes in this culture.

Which function models the growth of the Bacillus Megaterium over each generation?

Accepted Answer

P(n)=12∙ 2n

Answer

P(n)=12+2n

Answer

P(n)=12∙ 4n-1

Answer

P(n)=12(n+1)

Question 5

Write an equation for the nth term of the sequence 8, 32, 128, 512.

Accepted Answer

A_n=8(4)^n-1

Answer

A_n=4(8)^n-1

Answer

A_n=4(8)ⁿ

Answer

A_n=8(4)ⁿ

Related quizzes

Related quizzes