The function f(x) represents the time it takes a boat to travel upstream. The function g(x) represents the time it takes a boat to travel downstream. Given f(x) = 3x − 10 and g(x) = 12x + 8, solve for (f + g)(x) to determine the total roundtrip time.

(f + g)(x) = 15x − 2
(f + g)(x) = 9x − 2
(f + g)(x) = 15x + 2
(f + g)(x) = 9x + 2

(f + g)(x) = 15x - 2

Step-by-step explanation:

The function f(x) represents the time it takes a boat to travel upstream. The function g(x) represents the time it takes a boat to travel downstream.

Now, given that f(x) = 3x − 10 and g(x) = 12x + 8, and we have to determine (f + g)(x) for the total round trip time.

So, (f + g)(x) = f(x) + g(x) = (3x - 10) + (12x + 8) = 15x - 2

Hence, (f + g)(x) = 15x - 2 (Answer)

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it