Question

A certain region is losing 28 million acres of rain forest each year
A)Find a linear function f that calculates the change in acres of rain forest in million x years
B)find f(3) and interpret the result!
F(x)=
f(3)=
After_____ years, the region can expect to have lost about___million acres of rain forest

Answer 1

y=mx+b

m is the rate of change, b is the initial amount

m=-28 since it's LOSING 28 million a year and b=0 since it's lost 0 trees when you start counting. So:

y=-28x+b or f(x)=-28x+b

To solve for f(3), simply plug in 3 as x and solve for y.

Answer 2

After_____ years, the region can expect to have lost about___million acres of rain forest?

I do not know how to do the f(3) simply plug in 3 as x and solve y? That to me is gibe ration lol. I am so sorry!! haha. I am trying to learn, not easy.

Answer 3

f(3) means evaluate the function you have at 3. In words, it means how many trees will the forest have in 3 million years. Since x is the number of years in millions, f(x) will give you the answer.