C^2-a^2=b^2 b^2=81-36=45 x^2/36-y^2/45=1?
Answer:
1. When he sold 20 slices of pizza at $1.25 each, he made $20
When he sold 50 slices of pizza at $1.25 each, he made $62.5
2. 96 slices of pizza. You would get that by dividing 120 by 1.25, as he needs to make $120, and each slice costs $1.25
My guess would be less than $25
That's for the equation I got from the picture
