(3, 5), (4, 6), (3, 8), (2, 4), (1, 3), as a mapping

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much