Quick i’m almost done

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

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

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827