I need solution of these two questions must

A baseball team plays in a stadium that holds 50,000 spectators. With the ticket price at $9 the average attendence has been 19,000 . When the price dropped to $6, the average attendence rose to 25,000 . Find the demand as a function of the number of spectators x. You should assume it is linear. p(x)= At what value should the ticket price be set to maximize revenue? Suppose the total cost function to produce x bathroom vanity lights is: C(x)=0.1x2+23x+160 dollars Find the number of bathroom vanity lights, to the nearest whole, to produce each day to minimize average cost per light and find the minimum average cost. The minimize average cost is obtained when vanity lights are produced each day. The minimum average cost, to two decimal places (nearest cent), is per vanity light