What shape is this? Could you please tell me

Option 1: $30 an hour plus a nonrefundable deposit of $50 option 2: $20 an hour plus a nonrefundable deposit of $75 kyle is renting a jetski for the day. if he can rent the jetski in one hour increments, what is the minimum number of hours must he rent the jetski for option 2 to be a better deal then option 1?

Solve the triangle. a = 21°, c = 105°, c = 5

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)