Spiral Review 1.7

Solve

-19 = -8 (-4+a) - (2a+1)

• -1

• 14

• -5

• 5

Tags

CCSS.8.EE.C.7B

Solve:
3x + 15 = 3(x + 5)

• No Solution
• x = 15
• Infinitely Many Solutions

Tags

CCSS.8.EE.C.7A

Solve:
2x + 1 = 2x - 1

• No Solution
• x = 0
• Infinitely Many Solutions

Tags

CCSS.8.EE.C.7A

What is an inverse operation?

• A mathematic operation that is the same as another operation

• A term that does not change in value.

• A number that is multiplied by a variable.

• A mathematic operation that undoes another math operation.

Tags

CCSS.HSA.REI.A.1

Solve the equation for x:

• 17
• 16
• 15
• 14

Tags

CCSS.HSA.REI.A.2

Solve for b 

• 8
• 17/12
• 4/3
• 1/8

Tags

CCSS.HSA.REI.A.2

Solve for x
l 5x l = 40

• x = 8 and x =-8
• x = 35 and x = -35
• Only x = 8
• No Solution

Solve for x
l 2x−1 l = 9

• x = 5 and x =-4
• x = 5 and x = -5
• Only x = 5
• No Solution

−2|−2r − 4| = -12

• {3,1}

• {-5,1}

• {-3}

• No Solution

Evaluate each expression.
| x + 9 | = -5

• -14
• -4
• {-14, -4}
• no solution