I need help please fast

Ineed solving this problem h/8=-25 solve for h idk how to this can someone show me and also give an answer you

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?

Can anyone me with 32,33,36,37,and 40.