Answer:
D. 189
Step-by-step explanation:
z(7) = 7 + 5
z(7) = 12
w(12) = 12^2 + 4(12) - 3
w(12) = 144 + 48 - 3
w(12) = 144 + 45
w(12) = 189
w(z(7)) = 189
