Review Ratios, Rates, Proportions

Approximately what percent of the rectangle is shaded?

• 25%

• 33%

• 50%

• 67%

The ratio of orange juice to apple cider in a punch recipe is 2 to 3. If Isaiah uses 12 quarts of apple cider in the punch, how many total quarts of punch will he make?

• 20 quarts

• 8 quarts

• 15 quarts

• 10 quarts

What is the constant rate of change represented by the information in the table?

• 1/2 cup of flour per loaf of bread

• 2 loaves of bread per cup of flour

• 4 cups of flour per loaf of bread

• 1/2 loaf of bread per cup of flour

The cost of 20 gallons of gasoline is $47.00. What is the constant of proportionality that relate the total cost, y, to the number of gallons of gasoline, x?

• 0.43

• 47

• 2.35

• 5.25

Santa's sleigh travels 380 miles in 4 hours. At this rate, how many miles will it travel in 1/2 an hour?

• 95 miles

• 192 miles

• 125 miles

• 47.5 miles

Which relationship is best represented by the graph shown?

• the number of cups, x, in y ounces

• the number of seconds, x, in y minutes

• the number of ounces, x, in y cups

• the number of minutes, x, in y seconds

To create the shade of green Kyle wants, he needs 2 drops of blue for every 5 drops of yellow. What is the constant of proportionality that relates the number of drops of blue paint, y, to the number of drops of yellow paint, x?

• 0.4

• 2.5

• 10

• 0.5

Look at the graph. Which of the following best represents the constant rate of change shown in the graph?

• 6 feet per minute

• 1 foot per 6 minutes

• 6 minutes per foot

• 1/6 foot per minute

Santa's reindeer eat 12 pounds of food in 3 minutes. How many minutes would it take them to eat 64 pounds of food?

• 16 minutes

• 5.5 minutes

• 246 minutes

• 36 minutes

An elf can paint toy trains at a rate of 3 trains in 0.75 minutes. Which represents the constant rate of change of the elf's train painting speed?

• The elf's speed is 4 trains per minute.

• If this relationship were graphed, (8 , 2) would be a point on the graph.

• d = 0.75t

• The elf can paint 1 train every 0.5 minute.