Solution:
f(3) = 3(x + 5 + 2)
f(3) = 3(3 + 5 + 2)
f(3) = 3(10)
f(3) = 30
Substitute 30 for a:
f(30 + 2)
f(32)
Best of Luck!
Answer:
corrieron 50 kilómetros de la escuela a la casa
