It would be 28-10=x because your ending up with 28 after earning 10 you would get that. Hope this works!
Answer:
3
Step-by-step explanation:
Y intercept when x = 0
F(0) = 3 * 4^(0) = 3 * 1 = 3
One way to do this is to notice

Then

We have

and since
has a period of
,

and so

I believe C. Measuring the length from one end of the field tot he other would be the most reasonable answer, because Area = Length x Width