I need help please this is math

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?

It says factor each expression completely 8y+48

Find solution of the linear equation y = 2/3x + 1/3