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KattthD
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Label the equations values A(t) = a(1+ORr)^t
 A(t) final amount
 a initial amount
 t number of time periods
 r rate of increase

Tony purchased a guitar in 2000 for 12,000. It is estimated that the valuew ill increase by 14% each year. Find when the value of the guitar will be 60,000.
 60,000 = 12,000(1+.14)^t
 = 12,000(1.14)^t
 60,000/12,000 = 5
 log1.14^5 = t
 CHANGE OF BASE FORMULA log5/log1.14 ~ 12.2
 ANSWER: The guitar will be 60,000 in 12.2 years.

When graphing an inverse, what can you do to the x and y variables?
Switch the x and y with each other.

What happens to the domain and range for the inverse?
They switch with each other.

List the steps to writing and inverse.
 1. Put in y = f(x) format and graph f
 2. switch x and y
 3. solve for y
 4. write in slopeintercept form y = mx + b
 5. write inverse and graph

