Exponential Versus Linear Equations

• The population is increasing by 2 1.01billion people each year

• The population is increasing by 101.3% each year

• The population is increasing by 13% each year

• The population is increasing by 1.3% every year.

A new savings account is opened with $400 and gains 3% every year. What is the exponential function?

• f(x)=400(1+3)^x

• f(x)=400(1-0.03)^x

• f(x)=400(1+0.03)^x

• f(x)=400(0.03)^x

Describe the association of the scatter plot.

• Linear

• Exponential; Growth

• Exponential; Decay

• Linear; negative association

Greenville is having a blizzard. It has already snowed 1 inch and the total will double each hour. Write an equation for the total inch of snow in x hour. Use exponential regression.

• y=1(2)^x

• y=1(1/2)^x

• y=2(1/2)^x

• y=2(2)^x

After 9 days, approximately how many grams of this substance will exist?

• about 64244

• about 173602

• about 23774

• about 469111

“A bank account starts with $10. Every month, the amount of money in the account is tripled.” Is this a linear situation or an exponential situation?

• Linear

• Exponential

Decide whether the word problem represents a linear or exponential function. . “A library has 8000 books, and is adding 500 more books each year.”

• Linear

• Exponential

“A gym’s customers must pay $50 for a membership, plus $3 for each time they use the gym.” Decide whether the word problem represents a linear or exponential function.

• Linear

• Exponential

“A bank account starts with $10. Every month, the amount of money in the account is tripled.” Write an equation to represent this situation

• y=3(10)^x

• y=10(3)^x

• y=10(1.3)^x

• y=3x+10

“There are 20,000 owls in the wild. Every decade, the number of owls is halved.” Can this be modeled with a linear or exponential equation?

• Linear

• Exponential