(with one or all the problems, anything is greatly appreciated if you understand probability)

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

Which of the following tables represents exponential functions?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16