Proportional Relationships and Unit Rate Quiz

The table shows the relationship between time and cost. Justify why the relationship is proportional.

• The cost increases by $12 for each additional hour.

• The cost decreases by $12 for each additional hour.

• The cost remains constant regardless of time.

• The cost doubles every hour.

A model of a building is made using a scale of 1 inch = 20 feet. What is the height of the actual building if the model height is 14.5 inches?

• 290 feet

• 300 feet

• 310 feet

• 320 feet

If the cost is $36 for 3 hours, what is the cost for 6 hours?

• $72

• $108

• $144

• $180

If the number of birds is 16, how much time has passed according to the graph?

• 40 minutes

• 80 minutes

• 12 minutes

• 16 minutes

Ashanti is making pillows and buys 3 ½ yards of ribbon for $22.75. What was the cost per yard?

• $7 per yard

• $79.63 per yard

• $68.25 per yard

• $6.50 per yard

A drawing of a model car is drawn using the scale 1 inch = 3 feet. Convert the units to inches in order to determine the scale factor.

• 1:36

• 1:12

• 1:24

• 1:48

Phoenix can make 5 sets of earrings in 4 hours. How many sets can she make in 1 hour?

• 1.25 sets

• 2 sets

• 1 set

• 1.5 sets

Aubrey mixes 3 drops of red food coloring with 4 drops of blue food coloring to make 4 ounces of purple icing for cookies. How many drops of blue food coloring will Aubrey need to make 16 ounces of purple icing?

• 16 drops

• 12 drops

• 8 drops

• 20 drops

If a map scale is 1 in = 25 miles, what is the distance between cities 4 inches apart?

• 50 miles

• 12 miles

• 200 miles

• 100 miles

What if the scale is ¼ inch = 1 mile, what is the actual distance for cities 4 inches apart on the map?

• 16 miles

• 12 miles

• 20 miles

• 10 miles