How much did jeremy collect at first

$23

Step-by-step explanation:

Suppose Jeremy had collected m dollars up front.  His friends donated $9 more, bringing the total in Jeremy's pocket to $32.  

Note that m + $9 = $32.

If we subtract $9 from both sides, we get:

m = $32 - $9 = $23

Jeremy started out with (had collected) $23.

ad = ae + ed = y + 7

similar triangles therefor

ac/ab = ad/ae

6/4 = (y + 7) / y

cross multiply

6y = 4(y + 7)

6y = 4y + 28

2y = 28

y = 14

step-by-step explanation: