Angle abf is 77 , help please

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily