Writing Equations

Write an equation from the following description: Bob sells popcorn at 50 cents per bag. 

• y=5x
• y=0.5x
• y=1/5x
• y=1/0.5x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write an equation from the following description: Austin's Dad started a savings account for him by putting in $50 to start with. Every month then Austin is to put in $10. 

• y=50x+10
• y=1/50 x+10
• y=10x+50
• y=1/10 x+50

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write an equation from the following description: A cash register subtracts $2.50 from a $25 Coffee Cafe gift card for every medium coffee the customer buys. 

• y=-2.50x+25
• y=2.50x+25
• y=2.50x-25
• y= -1/2.50 x+25

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write an equation from the following description: A cash register subtracts $2.50 from a $25 Coffee Cafe gift card for every medium coffee the customer buys. 

• y=-2.50x+25
• y=2.50x+25
• y=2.50x-25
• y= -1/2.50 x+25

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.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSA.SSE.A.1

A 7-inch candle burns at a rate of 2-inches per hour. Which equation represents the relationship between y, the height of the dandle in inches, and x, the number of hours the candle burns?

• y=2x+7
• y=7-2x
• y=2-7x
• y=7x+2

Tags

CCSS.HSF-BF.A.1A

Margaret is a waitress at The Seafood Bonanza.  She earns $3 an hour plus 90% of her tips.  Write an equation for her salary, S, if she works h hours and earns d dollars in tips.

• 3h + 0.90d = S
• S = 90d + 3h
• S = 3d + 90h
• S = 3h + 9.0d

Tags

CCSS.6.EE.C.9

At Joe's Clown Car Rental Agency, renting a car costs $35 plus $0.75 for every mile it is driven.  What is an equation that can be used to find the number of miles, m, a vehicle was driven, if the total rental charge was $222.50?

• 222.5 = m(35 + 0.75)
• 222.5 = 35 + 0.75m
• 222.5 = 0.75 + 35m
• 222.5 = 0.75(m + 35)

Tags

CCSS.7.EE.B.4A

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 (C)?

• C = 15 + 0.20x
• C =15 (0.20x)
• C = 15 + x + 0.20
• C = 0.20 + 15x

Tags

CCSS.HSF-BF.A.1A

Gracie wants to increase the size of her garden.  If A = lw represents the current area of her garden, what is an equation that can be used to represent the resulting are of Gracie's garden if she increases the length by 5 and doubles the width?

• A = 10lw
• A = 2wl + 10w
• A = 2w (l - 5)
• A = 10wl + 2w

Tags

CCSS.8.EE.C.7B