Question

A certain region is losing about 21 million acres of rain forest each year.
A. find a linear function f that calculates the change in acres of rain forest in millions in x years

B. find f(9) and interpret the results

Answer 1

f(x)=21x, where x is the amount of years that passed starting from year 0

Answer 2

actually it shld be:
f(x)=21mln*x

Answer 3

f(9)=21mln*9=189mln

Answer 4

This means that 189mln acres of rain forest were lost in 9 years