Question

F(x)=x+4
F(-4), f(2), f(в) , f(в+2)

Answer 1

f( - 4) = - 4 + 4 = 0
f (2) = 2 + 4 = 6
f (b) = b + 4
f (b + 2) = b + 2 + 4= b + 6