Y=MX+B

Jackson wants to buy a new video game console. He has saved $50 and earns $20 per lawn that he mows. Which of the following equations can be used to determine the number of lawns Jackson needs to mow, m, in order to buy the video game console, which costs v dollars?

• v = 50m + 20

• v = 20m + 50

• m = 2/5 v + 50

• m = 5/2 v + 50

Tags

CCSS.6.EE.C.9

Maria wants to buy a bicycle that costs b dollars. She has already saved $80 and earns $15 for each dog she walks. Which equation can be used to find the number of dogs, d, Maria needs to walk to buy the bicycle?

• d = 15b + 80

• b = 80d + 15

• d = 80b + 15

• b = 15d + 80

Tags

CCSS.HSA.CED.A.3

Sam wants to purchase a skateboard that costs s dollars. He has $30 saved and earns $10 for each car he washes. Which equation represents the number of cars, c, Sam must wash to afford the skateboard?

• s = 10c + 30

• c = 10s + 30

• s = 30c + 10

• c = 30s + 10

Tags

CCSS.7.EE.B.4A

Emily wants to buy a concert ticket that costs t dollars. She has saved $25 and earns $5 for each babysitting job she does. Which equation can be used to determine the number of babysitting jobs, j, Emily needs to do to buy the ticket?

• t = 5j + 25

• j = 25t + 5

• t = 25j + 5

• j = 5t + 25

Tags

CCSS.7.EE.B.4A

A balloon is released from the top of a 75 foot building. The balloon rises at a rate of 2 feet per second. Which equation describes h, the height of the balloon in feet from the ground after s seconds?

• h = 75s

• h = 2s

• h= 2s + 75

• h= 75s +2

Tags

CCSS.HSF-BF.A.1A

Marco is saving up for a new bike that costs $217.50. He already has $70 saved and plans to mow lawns to earn the remaining amount. If he can make $15 for each lawn he mows, write an equation to find L, the number of lawns Marco needs to mow to buy the bike.

​ ​ (a)   L+ ​ (b)   ​ = ​ (c)  

• 70
• 15
• 217.50
• 150

• 10

• 300

• 20

• 250

Answer explanation

To find the number of lawns Marco needs to mow, subtract the amount he already has from the cost of the bike and divide by the amount he earns per lawn. The equation is 217.50 - 70 + 15L = 0. Solving for L gives the number of lawns.

Tags

CCSS.HSA.CED.A.3