CCSS.Math.Content.8.EE.C.7

9c-3c=48

• c=9
• c=3
• c=4
• c=8

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CCSS.Math.Content.8.EE.C.7

solve 3 < -5n + 2n

• n < -1
• n ≤ -1
• n > -4
• n < -3

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CCSS.Math.Content.8.EE.C.7

Solve the proportion.

• q=2
• q=9
• q=4.5
• q=6

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CCSS.Math.Content.8.EE.C.7

John had a balance of $22 in his bank account.  He wrote a check for $38.  What is his new balance?

• $16
• -$16
• $60
• -$60

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CCSS.Math.Content.8.EE.C.7

A rectangle has a perimeter of 100 inches. Its length is one more than two and a half times its width. Which equation can be used to determine the width of the rectangle? 

• 2.5x + 1 = 100 
• 3.5x + 1 = 100 
• 5x + 2 = 100 
• 7x + 2 = 100 

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CCSS.Math.Content.8.EE.C.7

15 = 2a + 7

• 2

• 4

• 12

• 11

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CCSS.Math.Content.8.EE.C.7

What is the first step to solve this equation:

11 - 3x = 44

• Add 3 to both sides

• Subtract 11 from both sides

• Add 11 to both sides

• Divide 3 on both sides.

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CCSS.Math.Content.8.EE.C.7

Kalia buys 5 items that cost d dollars each. She gives the cashier $60. Which expression represents the change she should receive?

• 60 − 5d

• 60 − d

• 60 + 5d

• 5d − 60

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CCSS.Math.Content.8.EE.C.7

What are the two basic rules for solving algebraic equations?

• Whatever you do to one side of the equal sign, you must copy and do on the other side of the equal sign

• Negative signs can be ignored

• Always start on the left side, regardless of where the variable is

• Always do the opposite operation

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CCSS.Math.Content.8.EE.C.7

 $-3x\ +2c\ =\ 3\ \ \ \ \ \ \ \ solve\ for\ x$  

•  $x=\frac{3-2c}{-3}$  

•  $x\ =\ 6+2c$  

•  $x\ =\ 6-2c$  

•  $x\ =\ \frac{3+2c}{3}$  

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CCSS.Math.Content.8.EE.C.7