1) Find g (4) by substituting 4 in place of x in g (x).
g(4) = 4^3 = 64
2) Substitute 64 in place of the x in f(x)
f(64) = 2(64) + 5
= 128 + 5
= 133
Answer:
7
Step-by-step explanation:
3x – 4(x - 4) + 4 = 13
=> 3x - 4x + 16 + 4 = 13
=> - x + 20 = 13
=> - x = 13 - 20
=> - x = - 7
=> x = 7
