Let's see:
#11: 30191 got it correct.
#12: I thought this was harder than it looked, but electriczax got it.
#13: Coin got it.
#14: Coin got it, it's coeff. 4.
#15: Neither are correct.
So basically, from since before school and after it, you got all but 1 correct:
(And just in case, it's kinda hard just finding the items in the grid

)
#15:
