I need help with 7 and 9. It is almost due!!

Find the solutions for a triangle with a =16, c =12, and b = 63º

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

According to the data set, where should the upper quartile line of the box plot be placed?