7.RP.A.2a Understanding Proportional Relationships

Maxine bought erasers for $0.50 per eraser.

Determine which of the options below have the same cost per eraser as Maxine's erasers.

• 5 erasers for $2.00

• 8 erasers for $4.00

• 3 erasers for $1.75

• 7 erasers for $3.50

• 13 erasers for $6.50

• 1 cup

• 2 cups

• 3 cups

• 4 cups

• 2 cups

• 3 cups

• 4 cups

• 5 cups

A recipe for fruit punch is: 2 parts lemon lime soda, 1 part orange juice, 2 parts sherbet

Select all of the mixtures below that are in a proportional relationship with this recipe.

• 10 parts lemon lime soda, 5 parts orange juice, 10 parts sherbet

• 4 parts lemon lime soda, 2 parts orange juice, 2 parts sherbet

• 6 parts lemon lime soda, 6 parts orange juice, 3 parts sherbet

• 12 parts lemon lime soda, 6 parts orange juice, 12 parts sherbet

• 14 parts lemon lime soda, 7 parts orange juice, 14 parts sherbet

At a local grocery store, the cost of 4 bags of M&Ms is $15.00 and the cost of 7 bags is $26.25.

Is this a proportional relationship?

• Yes

• No

A conveyor belt moves at a rate of 15 feet in 5 seconds. A different conveyor belt moves at a rate of 32 feet in 9 seconds. Does this situation represent a proportional relationship?

• Yes

• No

A concert venue charges $450 for 30 guests to attend a show.

At this rate, how much would the concert venue charge for 100 guests to attend a show?

Type only the dollar amount in the space provided.

(a)