Respuesta :

(f∘g)(3) = f(g(3))


Find g(3) by substituting x=3 in g(x)


g(x)=x²-1

g(3)=3²-1

g(3)=9-1

g(3)=8


f*g(3) = f(g(3)) = f(8)


find f(8) by substituting x=8 in f(x):


f(x)=2x+3

f(8)=2(8)+3

f(8)=16+3

f(8)=19


So f∘g(3) = 19


Sorry I am wrong



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