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## Device Pricing – Directed Practice – Web page Zero. 120

Question 1. Brandon enters bike races. He bikes 8 \(\frac\) miles every \(\frac\) hourplete the table to find how far Brandon bikes for each time interval

Answer: 1 hour: 8 \(\frac\) + 8 \(\frac\) = 17 1 \(\frac\) hour: 17 + 8 \(\frac\) = 25 \(\frac\) 2 hour: 25 \(\frac\) + 8 \(\frac\) = 34 2 \(\frac\) hour: 34 + 8 \(\frac\) = 42 \(\frac\)

Explanation: Divide the number of miles by the number of hours to find the unit rate in miles per hour. 3 \(\frac\) ? 1 \(\frac\) = \(\frac\)/\(\frac\) \(\frac\) ? \(\frac\) = \(\frac\) Convert from improper fraction to the mixed fraction. \(\frac\) = 2 \(\frac\) miles per hour

Explanation: Divide the number of pages by the number of minutes to find the unit rate in pages per minute. \(\frac\) ? \(\frac\) = \(\frac\) ? \(\frac\) = \(\frac\) Thus Kenny read \(\frac\) pages per minute.

Explanation: Given that, A garden snail moves \(\frac\) foot in \(\frac\) hour. Divide the number of feet by the number of hours to find the unit rate in feet per hour. \(\frac\) ? \(\frac\) \(\frac\) ? \(\frac\) = \(\frac\) Therefore A garden snail moves \(\frac\) feet per hour.

Explanation: Given, A fertilizer covers \(\frac\) square foot in \(\frac\) hour. Divide the number of square feet, which is \(\frac\) by the number of hours, which is \(\frac\), to find the unit rate in square feet per hour. \(\frac\) ? \(\frac\) \(\frac\) ? \(\frac\) =\(\frac\) Convert from improper fraction to the mixed fraction. \(\frac\) = 2 \(\frac\) square feet per hour Thus A fertilizer covers 2 \(\frac\) square feet per hour.

Question 6. Brand A: 240 mg sodium for \(\frac\) pickle or Brand B: 325 mg sodium for \(\frac\) pickle. ____________

Answer: Find the unit rates in mg per pickle for each brand by dividing the number of mg by the number of pickles. Brand A: 240 mg ? \(\frac\) = 240 ? 3 = 720 Brand B: 325 mg ? \(\frac\) = 325 ? 2 = 650 650 is less than 720 so Brand B has a lower unit rate.

Answer: Find the unit rates in cups per serving by dividing the number of cups by the number of servings. Ingredient C: \(\frac\) ? \(\frac\) \(\frac\) ? \(\frac\) = \(\frac\) Ingredient D: \(\frac\) ? \(\frac\) \(\frac\) ? \(\frac\) = \(\frac\) \(\frac\) is less than \(\frac\), ingredient C has a lower unit rate.