Question

If f(x) = 2x + 1 and g(x) = −2x − 3, find (f + g)(−1).

2

4

−2

−8

Answer 1

it doesn't exist, f+g eliminates the variable i think

Answer 2

-2

Answer 3

(f + g)(-1)


f(-1)+g(-1)


(2(-1)+1) + (-2(-1)-3)


-2+1 + 2-3


-2


So (f + g)(-1) = -2

Answer 4

if it was f(g(x)) i would understand

Answer 5

hm... never seen that notation before