23
Step-by-step explanation:
[tex]f(3) = {(3)}^{2} + 3(3) - 7 = 9 + 9 - 7 \\ = 18 - 7 = 11[/tex]
[tex]g(3) = 5(3) - 3 = 15 - 3 = 12[/tex]
[tex]f(3) + g(3) = 11 + 12 = 23[/tex]
RATE BRAINLIEST
