Proportional Reasoning

In a city the average cost of electricity is $0.12 per kilowatt-hour. Which graph best represents this relationship

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TEKS.MATH.7.4A

A family makes homemade pickles. They pack the pickles at a rate of 80 pickles per 5 jars. Which answer choices best represents packing y pickles in x jars at that rate? Select TWO correct answers.

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TEKS.MATH.7.4A

An online game increases in number of users at a rate of 500 users each day. Which graph best represents the relationship between y, the number of users, and x, the number of days?

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TEKS.MATH.7.4A

Natasha has a job putting letters in envelopes to be mailed. In 1 hour she put 42 letters in envelopes. Which equation best represents y, the total number of letters Natasha puts in envelopes in x hours if she continues at this rate?

• x = y + 42

• y = x + 42

• x = 42y

• y = 42x

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TEKS.MATH.7.4A

A home printer prints 48 black-and-white pages in 1.5 minutes. The same printer prints 20 color pages in 2.5 minutes. What are the rates in pages per minute for black-and-white and color printing? Choose the correct answer from each drop-down menu to complete the sentences.

The printer prints​ (a)   pages per minute in black-and-white.

The printer prints ​ (b)   pages per minute in color.

• 32
• 8
• 24
• 10
• 68

Tags

TEKS.MATH.7.4B

Hector paid $105 for 6 tickets to a hockey game. Each ticket cost the same amount. What was the cost of each ticket in dollars and cents?

Mathematical Equivalence

ON

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TEKS.MATH.7.4B

The cost of groceries for the Nguyen family was $210.00. The family used a coupon for 25% off the cost. What was the final cost after the coupon was used?

• $52.50

• $157.50

• $185.00

• $262.50

Tags

TEKS.MATH.7.4D

The ratio of blue to yellow to green gumballs in a gumball machine is 4 : 3 : 1. There are 24 yellow gumballs in the machine. Complete the sentences about the gumballs. Choose the correct answer from each drop-down menu to complete the sentences.

There are ​ (a)   blue gumballs. The machine contains a total of ​ (b)   gumballs.

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• 64
• 72
• 24
• 12

Tags

TEKS.MATH.7.4D

The ratio of the number of almonds to the number of raisins in a bag of trail mix is 4:3. There are 600 almonds in the bag. How many raisins are in the bag of trail mix?

• 300

• 150

• 800

• 450

Tags

TEKS.MATH.7.4D

A musician wants to buy sound equipment. He has saved $750. He plans to add $130 to this amount every month for the next 12 months and not spend any of the money he saves until he can afford the equipment. Which percentage is closest to the percent increase from the original amount of money he has saved to the amount he will have at the end of 12 months?

• 480%

• 32%

• 208%

• 68%

Tags

TEKS.MATH.7.4D