Exponential Equations and Word Problems

Solve for V

• v=-81

• v=81

• v=9

• v=3

Solve for x

• x=27

• x=-3

• x=81

• x=3

Tags

CCSS.HSA.REI.A.2

Mr. Gomez has a comic book collection, the value of the collection has been increasing 11% every year. He doesn't remember how much he paid on it, all he knows that the collection is now worth about $1020. Also, Mr Gomez began his collection when he was 25, he is now 35. How much did the collection cost when he first got it? (Round to the nearest cent)

• $359.00

• $359.22

• $359.23

• $359.21

The number of mosquitoes at the beginning of the summer was 4,000. The population of mosquitoes is expected to grow at a rate of 25% a month. Write an equation.

•  $y=4000\left(1.25\right)^x$  

Tags

CCSS.HSF.LE.A.2

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x

• y = 15(0.35)^x

• y = 15(1.35)^x

• y = 35(1.15)^x

Tags

CCSS.HSF.LE.A.2

The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)^t where t is the number of years since 1990. What percent did the population increase each year?

• 4%

• It doesn't say

• 1.04%

• 104%

Tags

CCSS.HSF-LE.A.1C

The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)^t where t is the number of years since 1990. What was the population in 1990?

• 0 people

• It doesn't say

• 6191 people

• 104 people

Identify the y-intercept (initial value) in the function f(x)=13(.27)^x

• (.27)^x

• .27

• 13

• 3.51

Tags

CCSS.HSF.LE.B.5

Write an equation that models the following situation:

Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• y=6(0.14)^x

• y=6(1+14)^x

• y=6(1.14)^x

• y=6(0.86)^x

Tags

CCSS.HSF.LE.A.2

An adult takes 800 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by about 29%. What equation could be used to represent this?

Tags

CCSS.HSF.LE.A.2