Question

if f(x)=4x+3 and g(x)=x^2-3 what is f(g(4))

Answer 1

$\text{Given that ,}\\\\f(x) = 4x+3\\\\g(x) = x^2 -3\\\\g(4) = 4^2 - 3 = 16-3=13\\\\f (g(4)) = f(13) = 4\times 13 + 3 = 55$