Respuesta :

Answer:

s(3) = 42

Step-by-step explanation:

if t = 3 then...

s(3) = 15 (3^3)      -  Given       now all we need to do is simplify

s(3) = 15 + 27       - add like terms (15 + 27)

s(3) = 42              - the answer :D

Mark brainlesit if this helped!