Answer each part. If necessary, round your answers to the nearest hundredth. (a) At Garcia's Bike Rentals, it costs $21 to rent a bike for 4 hours.
How many hours of bike use does a customer get per dollar?
30 hours per dollar
(b) Lashonda bought 18 pounds of rice for $9.
How many pounds of rice did she get per dollar?
30. pounds per dollar

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet