Answer: 9
Step-by-step explanation:
Answer:
g(3)=9-7=2
f(2)=5×2-4=10-4=6
3x + 21 is your answer
3(x+7)
3 × x = 3x
3 × 7 = 21
3x = 21
If you split it up it would be 60, 150, 210
