Answer each part. If necessary, round your answers to the nearest hundredth. \[ \begin{array}{l}\text { (a) At Davidson's Bike Rentals, it costs } \$ 11 \text { to rent a bike for } 3 \text { hours. } \\ \text { How many hours of bike use does a customer get per dollar? } \\ \text { (b) It takes } 88 \text { pounds of seed to completely plant an } 11 \text {-acre field. } \\ \text { How many pounds of seed are needed per acre? } \\ \text { pounds per acre per dollar }\end{array} \]
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The Deep Dive
Let's break it down step by step. (a) At Davidson's Bike Rentals, the cost to rent a bike for 3 hours is $11. To find out how many hours of bike use a customer gets per dollar, we can divide the total hours by the cost: \[ \text{Hours per dollar} = \frac{\text{Total hours}}{\text{Cost}} = \frac{3 \text{ hours}}{11 \text{ dollars}} \approx 0.2727 \text{ hours per dollar}. \] Rounding to the nearest hundredth, a customer gets approximately **0.27 hours of bike use per dollar**. (b) It takes 88 pounds of seed to plant an 11-acre field. To find out how many pounds of seed are needed per acre, we divide the total pounds of seed by the total acres: \[ \text{Pounds per acre} = \frac{\text{Total pounds of seed}}{\text{Total acres}} = \frac{88 \text{ pounds}}{11 \text{ acres}} = 8 \text{ pounds per acre}. \] Thus, **8 pounds of seed are needed per acre**.