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Last weekend, Charlie raked leaves in his front yard. He noticed that kilograms of leaves filled of a bag.
What is the unit rate for kilograms of leaves per bag? − 7 3 kg per bag − 4 9 Population density is the number of people per unit of area. The population density of a certain region is 60 peopler per square kilometer. If the region covers 23 square kilometers, what is the population of the region? people In a certain chemical, the ratio of zinc to copper is 3 to 16. A jar of the chemical contains 320 grams of copper. How many grams of zinc does it contain? grams of zinc Part A: Find the constant of proportionality. Part B: How long will the jet take to travel 4,620 miles? The distance a jet aircraft flies has a proportional relationship with its number of hours in flight. The table shows the number of miles flown for a number of hours in flight. hours miles per hour Part A: Find the correct constant of proportionality. Part B: What was your friend's likely error? Your friend found x - y Your friend found x • y Your friend found Your friend found x + y You and a friend look at the graph. Your friend incorrectly says the constant of proportionality of y to x is . 18 − 1 − x y − |