PLEASE HELP

9. base: 9 yards height: 17 yards​

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?

In triangle opq right angled at p op=7cm, oq-pq=1 determine the values of sinq and cosq

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?