What is the average per day?

F(x)=|x| is shifted down 4 units and to the right 3 units.

Can (2,3 and square root 10) be sides ona right triangle?

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?