Write the unit rate. Round to the nearest tenthif necessary 72 hr of work in 6 days 432 words in 8 min . \( 315 \mathrm{mi} \). on 15 gal . of gas \( \$ 680 \) for 4 tires

To find the unit rate for 72 hours of work in 6 days, divide the total hours by the number of days: \(72 \, \text{hr} \div 6 \, \text{days} = 12 \, \text{hr/day}\). So, the unit rate is 12 hours of work per day. For the 432 words written in 8 minutes, you can find the unit rate by dividing 432 by 8: \(432 \, \text{words} \div 8 \, \text{min} = 54 \, \text{words/min}\). Thus, the unit rate is 54 words per minute.