Answer:
Step-by-step explanation:
hello :
a(x) = 3x - 12 and b(x) = x-9, so
a[b(x)]=a(x-9) =3(x-9)-12
a[b(x)]=3x-9-12
a[b(x)]=3x+21
run = 1081.6 ft
sin = opp/hyp
sin18 = 3500 / run
run = 3500 / sin18
301.44 cubic units
9383792994
I the answer is 9383792994
