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:
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