Answer:
264
Step-by-step explanation:
[tex]f(x)=2x^2+3x-5[/tex]
[tex]g(x)=x+9[/tex]
[tex](fg)(x)=f(x) \times g(x)[/tex]
[tex]\implies (fg)(x)=(2x^2+3x-5)(x+9)[/tex]
[tex](fg)(3)=(2(3)^2+3(3)-5)(3+9)[/tex]
[tex]\implies (fg)(3)=22 \times 12[/tex]
[tex]\implies (fg)(3)=264[/tex]
