Wanda manages a webstore that specializes in kitchenware. the store sells a tea set for $65, and it averages 30 sales of this tea set per month. based on past sales, wanda estimated that for every $5 price increases for this tea set, she will sell 2 fewer sets each month. write an expression for wanda's monthly gross revenue from tea set sales after x $5 price increases as the product of two factors and then rewrite your expression in expanded form