Answer:
I'm not very sure but I think it is ($0.50x + $1.25y) >= $125
Explanation:
Well, you got .50 and you don't now what x is so you put it next to $0.50. Do the same to the $1.25. It will get you ($0.50x + $1.25y) is greater than or equal to $125
since they have to earn $125 or more. Hope this helps! Good Luck!