Question

g(t) = 3t+ 3f(t)=t+5Find g(t)• f(t)

Answer 1

$\begin{gathered} g(t)=3t+3 \\ f(t)=t+5 \\ g(t)\text{.f}(t)=g(t)\times f(t) \\ g(t).f(t)=(3t+3)(t+5) \\ g(t).f(t)=3t^2+15t+3t+15 \\ g(t).f(t)=3t^2+18t+15 \\ g(t).f(t)=t^2+6t+5 \end{gathered}$