What is the slope and unit rate of 1 and 2?

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

In stepmber, daniel and justin opened a business. during their first three months of business, their average monthly profit was $51. if during their first month, they lost $29, and during their second month, they gained $115, what was their profit or loss for their third plzzz i will give you 299 points

Will mark brainliest! ( explain the answer too, it can be one sentence)