Answer
A. 23
step-by-step explanation
[tex]g(x) = {x}^{2} + 1[/tex]
We put x=3 into the function g
[tex] \implies g(3)= {3}^{2} + 1[/tex]
[tex] \implies \: g(3)=10[/tex]
Also,
[tex] f(x)=2x +3[/tex]
we substitute the value of g(3) into f
[tex]\implies f(g(3))=f(10)[/tex]
[tex]\implies f(g(3))=f(10) = 2(10) + 3[/tex]
[tex]\implies f(g(3))=23[/tex]
