Question

If a(x) = 4x − 2 and b(x) = 12 − x, find b[a(3)].

Answer 1

a(3) = 4(3) − 2 = 10
so
b[a(3)] = 12 − 10 = 2

answer
2

Answer 2

if a(x)=4x-2
b(x)=12-x
find b(a(3))
b(a(3))=12-(4(3)-2
12-(12-2)
12-10=2
b(a(3)=2
answer is 2