Unit 5-8

Thomas got a speeding ticket. The cop said he had to pay $10 for each mile per hour he was going over the speed limit. Plus Thomas has to pay $115 court cost. Which equation correctly models what Thomas would have to pay? (y=mx+b)

• y=10x+115
• y=115x+10
• y=125x
• y=10x-115

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

Bob the plumber charges $15 per hour plus a service fee of $40 for coming out to your house. Which equation models this situation? (y=mx+b)

• y=15x+40
• y=15x
• y=40x+15
• y=15x-40

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

Alan buys a new car for $25,000. It depreciates (loses value) at a rate of $2000 per year. Which equation correctly models the situation? (y=mx+b)

• y=2000x-25000
• y=-2000x+25000
• y=25000-x
• y=25000x-2000

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Ted's Taxi service charges a $5 pick up fee plus $2 per mile. Which equation describes the situation?

• y=5x-2
• y=5x+2
• y=2x+5
• y=2x-5

Tags

CCSS.6.EE.C.9

Which equation best describes a relationship between x and y in the table below?

• y = 3x + 5
• y = 1/5x + 3
• y = 1/3x + 5
• y = x + 5

A 9-inch candle burns at a rate of 1.5 inches an hour. Which equation represents the relationship between y, the height of the candle in inches, and x, the number of hours the candle burns?

• y = 1.5x + 9
• y = 9 - 1.5x
• y = 1.5 - 9x
• y = 9x + 1.5

Tags

CCSS.HSF-BF.A.1A

Which equation best represents the graph shown below?

• y = 2x + 2.5
• y = 2 + 1.4x
• y = -1.5 + 2.2x
• y = 1.8x + 2

Regina is walking 10,000 feet for a fundraiser. She walks at a rate of 270 feet per minute. This situation is modeled by the table below, where d represents the remaining number of feet Regina has to talk and t represents the number of minutes she has already walked. Which equation can be used to model the situation?

• d = 10,000 - 270t
• d = 270t - 10,000
• d = 10,000t
• d = 270t + 10,000

A fitness club opens with 80 members. Each month the membership increases by 15 members. Which equation represents the relationship between the number of months the club has been opened, x, and the total fitness club membership, y?

• y=15x
• y=15x+80
• y=x+15
• y=80x+15

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

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

• 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