Which is greater 1 inch or 1 centimeter?

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 someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Solve -.016x= -16. need solving this