If 9 pairs of jeans cost $121.50 find the cost of 5 pairs

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points

A25- foot ladder leans against a building and reaches a point of 23.5 feet above the ground .find the angle that the ladder makes with the building