Question

1. Find ƒ(30) and explain what it means in the context of the problem. 3. I

2. f ƒ(x) = 100, find all values of x and explain what they mean in the context of the problem.
3. If ƒ(x) = 300, find all values of x.

Answer 1

*ahem

1. f(30) is 200

it means when x is 30, what is y

2.f(x)=100, so x=10 and 110

its means when y is 100, what are the x values that correspond with it

3. f(x)=300, so x is any number including and between 40 and 100