Notes--Page 10--Writing an Exp Decay Model

From yesterday's discussion, which of the following numbers is the multiplier?

• 1.15

• .15

• .85

What is the general form for exponential growth and decay?

• Y = initial amount (multiplier)^time

• Y = multiplier(initial amount)^time

How much caffeine is left in the body after 1 hour?

• 34.5 mg

• 25.5 mg

What is the multiplier?

• 1.2

• 0.8

What is the equation for 2 hours?

• y = 0.8(300)²

• y = 300(0.8)²