Evaluate f(a+2)for f(x)=x^2-9

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

Ineed with math stuff it involves graphs