The pool Entertain ment Company learned that by pricing a pool toy at GH10, local sales will reach 200 a week. Lowering the price to GH9 will cause sales to rise to 250 a week. a) Find an expression relating price and sales assuming it is linear. AN, (7) b) Write an equation that describes the relationship in slope intercept form. Use ordered pairs of the form (sales price, number sold). AP (5) c) Predict the weekly sales of the toy if the price is GH7.50 . AN (8) 2 d) Predict the weekly sales of the toy if the price is GH14. AP (5)