2-1 Equations

WRITE AN EQUATION

You bought a magazine for $5 and four

erasers. You spent a total of $29. How

much did each eraser cost?

• 5 + x = 29

• 5 + 4x = 29

• 5x = 29

• 29 - 5 = -4x

WRITE AN EQUATION
For a field trip 4 students rode in cars and the rest filled nine buses. How many students were in each bus if 472 students were on the trip?

• 4x=472
• 9x=472
• 4+9x=472
• 4+x=472

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CCSS.HSA.CED.A.3

After paying $5.12 for a salad, Norachai has $27.10. How much money did he have before buying the salad?

• n + $5.12 = $27.10
• n - $5.12 = $27.10
• n - $5.12 = -$27.10
• $5.12 - n = $27.10

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CCSS.HSA.CED.A.3

How many boxes of envelopes can you buy with $12 if one box costs $3?

• 3n = -12

• n/3 = 12

• 3-n = 12

• 3n = 12

Todd caught three times as many fish this year than last year. He caught 63 fish by the end of the year. Which algebraic equation represents how many fish he caught last year? 

• 3f = 63
• 63 - 3 = f
• 63/3 = f
• 3 + f = 63

Tags

CCSS.HSA.CED.A.3

WRITE AN EQUATION
Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

• 24 - 10 = -7x
• 24 - 7x = 10
• -24 - 7x = -10
• 10 + x = 24

Tags

CCSS.HSA.CED.A.3

Rachel and Sharon are splitting up their Pokemon cards.  Rachel has 4 fewer than 3 times as many as Sharon.  Together they have 100 cards.  Which equation could be used to solve for how many cards Sharon had originally?

• n + (3n - 4) = 100
• n - (3n - 4) = 100
• n + (4 - 3n) = 100
• 4 - 3n = 100

Scott works on cars. He charges $35 for each car plus $7 per hour. Write an equation that represents this scenario if Kylie's car bill was $63.

• 7x + 35 = 63
• 7x = 63
• 7x - 35 = 63
• 35x + 7 = 63

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CCSS.HSA.CED.A.3

Penelope is going to the carnival to ride the rides. It costs $20 to get into the carnival and ride tickets are $0.50 each. Write an equation that represents this scenario if she spends $35 in all.

• .50x + 20 = 35
• .50x = 35
• .50 + 20x = 35 
• .50x - 20 = 35

Tags

CCSS.HSA.CED.A.3

WRITE AN EQUATION

Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

• 24-10=7x

• 24+7x=10

• 10+7x=24

• 10+x=14

Tags

CCSS.HSA.CED.A.3