Question

dada f(x)=5-2x calcule f(3) f(-1) f(x) f(x+h)

Answer 1

f(3) = 5-2×3 = 5-6= -1
f(-1)= 5-2×(-1) = 5+2 =7
f(x) =5-2x
f(x+h) = 5-2(x+h)= 5-2x -2h