Which term best describes the number of solutions that will maximize the function below given the constraints listed? x+2y=5 x-y=2 a. unbounded b. one optimal solution c. infeasible d. alternate optimal solutions

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

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Answer this question! 30 points and brainliest! only if you know the answer.