Use the information to answer the question. The equation y = 5z represents the total cost, y, of buying z donuts at Store 1. The graph shows the total cost, y, of buying z donuts at Store 2. 15 13.5 12 710.5 7.5 4.5 1.5 0 1 2 3 4 5 6 7 Number of Donuts Bought 8 9 10 * Part A Which statenment about the unit rate of the graph is true? O The slope represents the unit rate of the total cost for 1 donut. O The slope represents the unit rate of the total cost for 6 donuts. O The slope represents the unit rate of the total number of donuts for $1. O The unit rate cannot be determined from the graph. Total Cost (dollars)

Use the information to answer the question. The equation y = 5z represents the total cost, y, of buying z donuts at Store 1. The graph shows the total cost, y, of buying z donuts at Store 2. 15 13.5 12 710.5 7.5 4.5 1.5 0 1 2 3 4 5 6 7 Number of Donuts Bought 8 9 10 * Part A Which statenment about the unit rate of the graph is true? O The slope represents the unit rate of the total cost for 1 donut. O The slope represents the unit rate of the total cost for 6 donuts. O The slope represents the unit rate of the total number of donuts for $1. O The unit rate cannot be determined from the graph. Total Cost (dollars)