Unit 4 Quiz Practice Exponential

Label

c

b

a

Growth or decay factor

Number of times it grows or decays

Initial starting value

Select TWO functions that represent exponential decay

• $105,000

• $567.000

• $540,000

• $640,000

Mathematical Equivalence

OFF

A lake is 10 miles long, Its length is decreasing by 3% every 13 years. if f(x) is the lake's length in miles after x years, which function describes the situation?

Complete the table to determine whether each function represents

exponential growth or exponential decay.

Groups:

(a) exponential GROWTH

,

(b) exponential DECAY

Groups:

(a) YES

,

(b) NO

• The model shows the population increasing by 15% every 20 years.

• The model shows a current population of 1.2 million people

• The model shows the population is growing exponentially

Which of the follow represents a decreasing function?

• 
• 

A sample of bacteria has a weight of 26 mg and a half-life of 7 days. How much of the bacteria will remain after 1 week?

• 26 mg

• 13 mg

• 3.7 mg

• 6.5 mg

• 5 Years

• 6 Years

• 4 Years

• 2 Years