You’re answer is d (sum,sum).
It would be 4 (2)=a hope this helps not very good this
Plug in 31 where h is assuming that's what the variable h represents.
31 - 15 = 3.2t
16 = 3.2t
Divide both sides by 3.2
t = 5
The answer would be 108 because you take 9 and times it by 12 which gives you 108
