How do you divide ratios that are uneven?

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?

A(t)=728(1+0.04)^t how much money did aditya originally invest

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box