Tickets to a concert cost either $12 or $15. a total of 300 tickets were sold, and the total receipts were $4140. how many of each kind of ticket were sold?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Would greatly appreciate these 3 answers