If f(x) = 2x+3 and g(x) = x^2 , then f[g(-3)]=?

1 Answer
Jan 24, 2018

f(g(-3))=21

Explanation:

"evaluate g( -3) and substitute into f(x)"

g(color(red)(-3))=(color(red)(-3))^2=9

rArrf(g(-3))=f(9)=(2xx9)+3=21