What do you do when you have to simplify a rato

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

Which graph of a hyperbola represents the equation 16x^2-y^2=16

A. 120 degrees b. 90 degrees c. 30 degrees d. 60 degrees