Question

The cost of an iphone increases 10% each year.

a) What is the multiplier? (1.1)
b) If an iphone costs $600 now, write the function to niodel this situation.
c) What will it cost in three years?
d) What did it cost two years ago?

Answer 1

a) the multiplier is the years

b) cost of iPhone = 600 + 600* (.1x)

c) f(3) = $780

d) f(-2) = 480