Ayearbook company promises to give the junior class a picnic if they spend at least $28,000 on yearbooks and class rings. each yearbook costs $35 and each class ring cost $140. the situation is represented by y greater than or equal to -1/4x+200

(a) how many class rings would they need to sell if they sold 320 yearbooks?

(b) give one possible combination of yearbook sales and ring sales that will allow the class to have picnic.

(c) if the juniors sell 240 yearbooks and 120 class rings will they be able to have the picnic?

somebody .