What is the volume of this rectangular prism

Option 1: $30 an hour plus a nonrefundable deposit of $50 option 2: $20 an hour plus a nonrefundable deposit of $75 kyle is renting a jetski for the day. if he can rent the jetski in one hour increments, what is the minimum number of hours must he rent the jetski for option 2 to be a better deal then option 1?

Tell whether the two rates form a proportion

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air