Linear Equations from Words

Which situation below is representative of y-intercept?

• putting $300 a month into savings
• buying $30 worth of supplies for a lemonade stand
• Spending $3 per ride at the fair
• Paying $2 for parking every day

Bob has $150 in his savings account and saves $40 per month.  Which equation represents the amount Bob has in his account after m months?

• s = 150 + 40

• s = 40m+ 150

• s = 150m+ 40

A holiday meal costs $12.50 a person plus a delivery fee of $30. Which equation represents the amount a holiday meal costs, including delivery, for p people?

• c = 12.5p + 30

• c = 12.5 + 30

• c = 30p + 12.5

• 12.5 = c + 30p

Easy Car Rental charges $8.50 an hour plus a rental fee of $25.50. Which equation represents the total charges for x hours?

• c = 8.5 + 25.5

• c = 8.5h + 25.5

• c = 25.5h + 8.5

• 8.5 + 25.50 = 34

Jerry has $20 and makes $7 per hour. Which equation represents the total amount of money Jerry has after working h hours?

• a = 7h + 20

• a = 20h + 7

• a = 20 + 7

• 20h + 7 =27

Sonya has $40 in her lunch account and pays $2 each day to eat lunch.  Which equation can be used to find the amount (a) of money Sonya has left on her account after d days?

• a = 40 + 2d

• a = 40 - 2d

• a = 2 + 40d

• a = 2 - 40d

For lunch, Amanda had a hamburger and some potato chips. The hamburger totaled 325 calories and each potato chip had 12 calories. Write a liner equation to represent the situation.

• c = 12 + 325

• c = 12p  + 325

• c = 325h - 12p

• c = 325p + 12

Which equation shows the number of bottles left after d days?
A family buys a case of water with 48 bottles and drinks 5 bottles per day.

• b = 48d + 5

• b = -5 + 48d

• b = -5d - 48

• b = 48 - 5d

A man is climbing down from 100 feet high descending 30 feet per minute. Which equation shows the number of feet left to descend after m minutes?

• f = 100 - 30m

• f = 100 + 30m

• f = 100m+ 30

• f = 100m - 30

The total cost (c) at an amusement park can be modeled by c = 1.50r + 20 where r is the number of rides you ride. What is the entrance fee?

• 1.50

• 200

• 0

• 20