4 friends want to go in on the purchase of a pack of earrings. The pack costs $52.54. Each person will pay $13.56. Which expression should be used to find out how much each person will pay?
O 13.560 = 4
O 13.560 = 52.54
O 4C = 52.54
O 13.560 = 52.54

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Can someone check if i did this correct. it’s number 4 if you’re wondering.