DA #3

The student council is selling roses to collect funds for a charity. The graph compares the number of roses purchased and total cost.

Based on the information in the graph, what is the unit cost per rose?

The graph shows the number of cups of brown sugar used per jar of candied pecans. 

Which graph represents an equivalent rate of change?

• 
• 
• 
• 

The graph shows the relationship between the average number of 

cavities found per person by dentists and the total number of minutes the person spent brushing their teeth each day.

If a dentist finds 3 cavities at a person’s dental checkup, what is the best prediction
of the number of minutes per day the person spent brushing their teeth?

• 1.75 minutes

• 4 minutes

• 1 minute

• 0.5 minute

Carlos recorded the weight of several bags of potatoes, and then he counted the number of potatoes in each bag. The scatterplot represents the relationship between the number of potatoes in a bag and the weight of the bag.

Based on this scatterplot, approximately how many potatoes are in a 15-pound bag?

• 8 potatoes

• 15 potatoes

• 45 potatoes

• 50 potatoes

Which relationship does NOT represent a non-proportional function? 

• 
• W = 17.2p – 0.01 

• 
• The value of y is 7 less than 4 times the value of x. 

Katie and Marco are saving money for college. They both invested money in CDs at the same bank that pays an annual compound interest rate of 3.75%.

• Katie invested $1,050 every year for 10 years.

• Marco invested $2,100 every year for 4 years.

Which statement about Katie and Marco’s investments for college is true?

• Marco will have more money in his college account than Katie because he invested more money each year.

• Katie and Marco will have the same amount of money in their college accounts.

• It is impossible to determine whether Katie or Marco will have more money in their college accounts.

• Katie will have more money in her college account because she invested regularly over a longer period of time.

Antonio estimates the cost to attend the first year of community college in a neighboring town will be $15,386 for tuition and room and board.

• Antonio has already saved $4,750.

• His aunt will pay for $3,000 of the cost.

• He has a music scholarship for $1,500.

How much will Antonio need to save each month for the next 3 years to have enough to pay for the first year of attending community college?

Enter the correct answer in the box. Round to the nearest hundredth.

The graph shows the linear relationship between the charge for a 

package delivery service and the number of miles that the 

package must be delivered for Van’s delivery service and 

Pickup’s delivery service. 

Which is a true statement based on the relationships in the graph?

• The charge to deliver a package 4 miles is $10 less for 

  Pickup’s service than for Van’s service. 

• The charge to deliver a package 4 miles is $10 more for 

  Pickup’s service than for Van’s service. 

• The charge to deliver a package 4 miles is $40 for both 

  Van’s service and for Pickup’s service. 

• The charge to deliver a package 4 miles can't be determined 

  for Van’s or Pickup's services from the 

  graph. 

Jeremiah is saving money in a bank account.

• He opened the account with $25.

• Each month he added the same amount of money to the account.

• After 8 months, the account had $505.

Which equation can be used to calculate the amount of money in the account, y, after x months?

• y = 8x + 25

• y = 25x

• y = 25x + 505

• y = 60x + 25

Alma’s rainwater collection tank outside of her house can hold up to 1,000 gallons of rainwater. Alma recorded that there were 244 gallons of water in the tank prior to the time when the rain began. Forty-two minutes later after a steady rain, the collection tank was completely full and had not spilled over the top of the tank.

 

Which equation models the relationship between the time it was raining and the amount of rainwater in the collection tank?

• y = 42x + 756
  

• y = 18x + 244

• y = 42x + 244
  

• y = 1/18x + 244