Question

REPOST

The function f(x) = 2x + 210 represents the number of calories burned when exercising, where x is the number of hours spent exercising.
The function g(x) = 2x + 125 represents the calorie deficit that occurs when following a particular diet, where x is the number of hours spent exercising.

What is (f + g)(3)? Show all work and explain your answer.


Note: Check your work when adding.

Answer 1

347

Step-by-step explanation: took the test

Answer 2

(f + g)(3) = 347

Explanation:

(f + g)(x) = f(x) + g(x) (by definition)

then

(f + g)(3) = f(3) + g(3)

= 2(3) + 210 + 2(3) + 125

= 6+210+6+125

=347