Defining functions: word problems.

[saxonchick]

Here's the problem from my homework that I can't understand.

The amount of fuel F (in billions of gallons) used by trucks from 1980 through 1996 can be approximated by the function
F(t) = 20.46 + 0.04t
where t=0 represents 1980.

(a) Describe how F can be obtained from the common function f(x) = x^2. Then sketch the graph over the interval 0?t?16
(b) Rewrite the function so that t = 0 represents 1990. Explain how you got your answer.




Yeah, I don't understand how to do any of it. I need a lot of help. Can someone please explain?

 

[Deleted member 4993]

Here's the problem from my homework that I can't understand.

The amount of fuel F (in billions of gallons) used by trucks from 1980 through 1996 can be approximated by the function
F(t) = 20.46 + 0.04t
where t=0 represents 1980.

(a) Describe how F can be obtained from the common function f(x) = x^2. Then sketch the graph over the interval 0?t?16
(b) Rewrite the function so that t = 0 represents 1990. Explain how you got your answer.


Yeah, I don't understand how to do any of it. I need a lot of help. Can someone please explain?

Check your problem carefully for correctness. I believe - your post has mistake/s.