Linear Equations in Real World

Which element represents the y variable in the problem?

• dimes

• cost

• total amount of money in the piggy bank

• quarters

Tags

CCSS.6.EE.B.6

Mathematical Equivalence

ON

Tags

CCSS.7.EE.B.4A

Mathematical Equivalence

ON

Tags

CCSS.7.EE.B.4A

Mathematical Equivalence

OFF

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage. If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill? The equation is y=0.20x+15. What does the y mean?

• amount of minutes

• total cost

• cost per minute

• variable

• flat fee

Tags

CCSS.HSF.LE.B.5

A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 160 lbs and each box of books weighs 50 lbs. The maximum capacity of the elevator is 1000 lbs. How many boxes of books can the delivery person bring up at one time?

• 50x + 160 = 1000

• 50 + 160x = 1000

• 50x - 160 = 1000

• 50 - 160x = 1000

The cost, c, to park in a parking garage can be represented using the equation c = 5 + 0.5h, where h is the number of hours the car is in the parking garage. Which of these statements is TRUE?

• It costs $0.50 to park in the garage for 1 hour.

• It costs $5 to park in the garage for 1 hour.

• It costs $5 per hour to park in the garage.

• It costs $6 to park in the garage for 2 hours.

Tags

CCSS.HSF.LE.B.5

Each month Chuck’s phone company charges a flat fee of $12 plus $0.05 per minute. Louie’s phone company charges him a flat fee of $6 plus $.85 per minute. How many minutes would the boys have to talk for their phone bill to be the same?

• 7 minutes

• 7 minutes and 30 seconds

• 8 minutes

• 8 minutes and 30 seconds

Tags

CCSS.8.EE.C.8C

Joe’s Canoes charges an initial fee of $20 plus $4 an hour. Callie’s Canoes charges a flat rate of $14 an hour. Find the number of hours for which the total amount that both places charge would be the same.

• 3 hours

• 4 hours

• 1 hour

• 2 hours

Which of the following situations could be descried by the equation y= -25x + 120

• There are 120 people in the football stadium, and 25 more are entering each hour.

• A plumber charges $25 for a house call and $120 per hour.

• A teacher has 120 students. Her third period has 25 students

• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

Tags

CCSS.HSF.LE.B.5