If f(x) = -x + 4 and g(x) = x^2 - 5, then f(g(-2)) = ?
a) -5
b) -1
c) 5
d) 13
e) 31

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books