Need help with all 3 please

0/10 pts 0 5 2 99 0 Details Question 7 A manufacture has been selling 1050 television sets a week at $510 each. A market survey indicates that for each $24 rebate offered to a buyer, the number of sets sold will increase by 240 per week. a) Find the demand function p(a), where a is the number of the television sets sold per week. p(x) = b) How large rebate should the company offer to a buyer, in order to maximize its revenue? Question Help: Video Submit Question Question 8 Go/10 pts 9 5 99 0 Details A baseball team plays in a stadium that holds 68000 spectators. With the ticket price at $9 the average attendance has been 29000. When the price dropped to $6, the average attendance rose to 34000. Assume that attendance is linearly related to ticket price. What ticket price would maximize revenue? $ Question Help: Video 1 Video 2 Submit Question Question 9 0/10 pts 9 5 99 @ Details The concentration of a drug t hours after being injected is given by C(t) = - 0.6t t 2 + 50 . Find the time when the concentration is at a maximum. Give your answer accurate to at least 2 decimal places. hours