Write a quadratic equation in standard form that has two solutions, -7 and -8

Agrocery store has 12 lb of trail mix that is 10% banana chips. the store's manager would like to add banana chips to bring the new mix up to 25% banana chips. write and solve a system of equations to find out how many pounds of banana chips manager needs to add.

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

What’s the answer ? use the picture to see the problem