Question

dada f(x)=3-4x calcule f(a),f(a+1) y f (a) + f (1)

Answer 1

f(x)= 3 - 4x

f(a)= 3 - 4a
f(a+1)= 3 - 4(a+1) = 3 - 4a - 4= -1- 4a

f(a) + f(1) = 
sabemos que
f(a)= 3 - 4a
f(1)=3 - 4 = -1

f(a) + f(1) = 3 - 4a - 1 = 2 - 4a