Question

If the 180 food calories found in a granola bar come entirely from p grams of protein, f grams of fat, and c grams of carbohydrate, which expresses f in terms of p and c? A)f = 180 − pc 

B)f = 180 + p − c  C)f = 180 − p − c  D)f = 180 − (p − c)

Answer 1

Actually the answer is f = 180 − p − c

Explanation:

Answer 2

If you assume that calories and grams are interchangeable (which they are not), then you can start with

... f +c +p = 180

and subtract everything that is not f on the left.

... f = 180 - p - c . . . . . matches selection C)