Linear and Exponential Functions Word Problems

A plant is 5cm tall and growing at a rate of 3cm a month.

• y = 5 + 3

• y = 5x + 3

• y = 3x + 5

• y = 3x + 5x

Tags

CCSS.6.EE.C.9

Bob has $150 in his savings account and saves $40 per month.

• y = 150 + 40

• y = 40x + 150

• y = 150x + 40

Tags

CCSS.6.EE.C.9

The total cost (y) at an amusement park can be modeled by y=1.5x+20 where x is the number of rides you ride. What is the price per ride?

• 1.5

• 21.5

• 0

• 20

Tags

CCSS.HSF.LE.B.5

Is the graph linear, exponential or neither?

• Linear

• Exponential

• Neither

A holiday meal costs $12.50 a person plus a delivery fee of $30.  Which equation represents the amount a holiday meal costs, including delivery, for x people?

• y = 30 + 12.5x 

• y = 12.5 + 30

• y = 12.5 + 30x

Tags

CCSS.HSF-BF.A.1A

You have inherited land that was purchased for $30,000 in 1990. The value of the land increased by approximately 5% per year. What is the approximate value of the land in the year 2011?

• $83,579

• $10,217

• $14,963,655

• $28,500

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?

• 104%

• 4%

• 40%

• 400%

Tags

CCSS.HSF-LE.A.1C

Is the pictured graph exponential growth, exponential decay, or linear or none?  

• Exponential Growth

• Exponential Decay

• Linear

• None of the above

Tags

CCSS.HSF-IF.C.7E

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

A particular type of cell triples in number every hour. Which function can be used to find the number of cells present at the end of h hours if there are initially 6 of these cells?

• f(h) = 3(6)^h

• f(h) = 6x^h

• f(h) = 6(3)^h

• f(h) = 3(6h)

Tags

CCSS.HSF.LE.A.2