Which expression is equivalent to y•y•y•z•z•z•z?

Ineed with this problem 21 show steps

Is it greater than or less than7*3_9*2

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