Question

(50 Points & Brainliest, please show work)

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

Answer 1

Answer:

(f+g)(3) = 347 calories

Step-by-step explanation:

f(x) = 2x + 210

g(x) = 2x + 125

(f+g)(x) is the sum of the functions

(f+g)(x) = 2x+210 + 2x+125

Combining like terms

           =4x+335

Now let x = 3

(f+g)(3) = 4*3 +335

            = 12 +335

            = 347

(f+g)(3) = 347 calories

Answer 2

Answer:

347

Step-by-step explanation:

f(x) = 2x + 210

g(x) = 2x + 125

we know that (f+g)(x)=f(x)+g(x)

so (f+g)(x)= 2x + 210 + 2x + 125 = 4x + 335

(f+g)(3) simply means that x=3

therefore

(f+g)(3) = 12 + 335 = 347