CAN SOMEONE HELP ME WITH THIS? (30 PTS)

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?

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48

Answer pls man im trying to get out of summer school