Answer:
x+a .....................
first bar: 4(high),21(across)
second bar: 9(high),22(across)
third bar: 12(high),14(across)
g(3)=34
Step-by-step explanation:
Just plug in 3 for x:
4(3)^2-3(3)+7
4(9)-9+7
36-9+7
27+7
34
So g(3)=34