Exponential Growth & Decay

Convert 15% to a decimal equivalent

• 15

• 1.5

• 0.15

• 0.015

Convert 6% to a decimal equivalent

• 6

• 0.6

• 0.06

• 60

Convert 3.5% to a decimal equivalent

• 3.5

• 0.35

• 35

• 0.035

Convert 0.5 to a percentage

• 50%

• 5%

• 0.5%

• 0.05%

Convert 0.07 to a percentage

• 0.07%

• 0.7%

• 7%

• 70%

Convert 1 to a percentage

• 10%

• 100%

• 1%

• 0.01%

What is the initial value in the exponential function  $y=200\left(1.02\right)^2$  ?

• 1.02

• 200

• 2

• 100

What is the initial value in the exponential function  $y=25000\left(0.65\right)^x$  ?

• 25000

• 0.65

• 65

• 35

A population of 1500 deer decreases by 1.5% per year. Which function can be used to determine the number of deer, y, in this population at the end of t years?

• $y=1500\left(1.5\right)^t$

• $y=1500\left(1.015\right)^t$

• $y=1500\left(0.985\right)^t$

• $y=1500\left(0.85\right)^t$

An antibiotic is introduced into a colony of 12,000 bacteria during a laboratory experiment. The colony is decreasing by 14.9% per minute. Which function can be used to model the number of bacteria in the colony after x minutes?

• $y=12000\left(1.149\right)^x$

• $y=12000\left(0.851\right)^x$

• 
  

  $y=12000\left(0.149\right)^x$
  

• $y=12000\left(1.49\right)^x$