Hey y’all can u give me the correct answer pls.

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.

What point is the projection of q on a) r b) s c) t

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents