Cylinder a has a greater radius than cylinder b the cylinder a necessarily have a greater volume than cylinder b

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?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?