Exercise 3 Page 286

A phenomena exhibiting exponential growth increases over time, and exponential decay decreases over time.

See solution.

Practice makes perfect

We can compare exponential growth and exponential decay functions by using a table.

Exponential Growth	Exponential Decay
Special cases of an exponential function.
Occurs when a quantity increases by the same factor over equal intervals of time.	Occurs when a quantity decreases by the same factor over equal intervals of time.
It is modeled by the function y = a(1 +r)^x	It is modeled by the function y = a(1 -r)^x
In this equation r represents the rate of growth, given in decimal form.	In this equation r represents the rate of decay, given in decimal form.

Communicate Your Answer p.281

Monitoring Progress p.282-285

Exercises p.286-288

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