Coach E's Applications of Linear Equations

Belinda's car needed repairs. The mechanic charged him $140 for the parts and an additional $48 an hour for labor. Write an equation that models this situation.

• y = 140x +48

• y = -48x +140

• y = 48x +140

• y = 48x

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.6

CCSS.6.EE.C.9

A driving range charges $4 to rent a golf club plus $2.75 for every bucket of golf balls you hit. Write an equation that shows the total cost c of hitting b buckets of golf balls.

• c = 2.75b + 4
• c = 2.75b
• c =  4b- 2.75
• c = 2.75b - 4

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Solve for x.

• x = 3

• x = -3

• x = -10

• x = 10

Tags

CCSS.7.EE.B.4A

A plant is 5cm tall and growing at a rate of 3cm a month. If the plant is 23cm tall, how many months has it grown for?

• 5 months
• 21 months
• 6 months
• 18 months

Tags

CCSS.7.EE.B.4A

Sonia has $40 in her lunch account and pays $2 each day to eat lunch. y=40-2x. If Sonia has $22 left in her account, how many lunches did she buy?

• 9 lunches
• -9 lunches
• 18 lunches
• -18 lunches

Tags

CCSS.7.EE.B.4A

Sonia has $40 in her lunch account and pays $2 each day to eat lunch. y=40-2x. If Sonia buys 5 lunches, how much money will she have left in her account?

• $3
• $35
• $30
• $15

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Billy's car needed repairs. The mechanic charged him $140 for the parts and an additional $48 each hour for labor. How many hours of labor did the mechanic work on the car if her total bill was $260?

• 3 hours
• 12 hours
• 2.5 hours
• 5 hours

Tags

CCSS.7.EE.B.4A

After a 20% reduction, you purchase a television for $352. What was the price of the TV before the reduction?

• $400

• $420

• $440

• $460

• $480

The median salary of a postal worker exceeds that of a reporter by $12,000. Combined, the two earned $116,000. What are the median salaries of the postal worker and the reporter?

• Postal Worker $52,000; Reporter $64,000

• Postal Worker $56,000; Reporter $68,000

• Postal Worker $56,000; Reporter $60,000

• Reporter $64,000; Postal Worker $54,000;

• Reporter $63,000; Postal Worker $51,000;

Including 8% sales tax, a Hotel charges $189 per night. How much is a night at the Hotel before tax is added?

• $150

• $165

• $170

• $175

• $185