Alg 1A Midterm Review for Chap 1-3

Translate the following sentence into an equation. The sum of twice a number x and 13 is two less than three times x. (circle your answer)

• 2(x+13) + 3x - 2

• 2x+13= 3x - 2

• 2x + 13 = 2 – 3x

• 2x +13=3(x - 2)

Tags

CCSS.HSA.CED.A.1

• 11

• 9

• -4x - 20

• -21

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Solve for m: m - 13 = 8

• m = 5

• m = -5

• m = 21

• m = -21

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Solve for w: 5w = -75

• w = -80

• w = -15

• w = 15

• w = -70

Tags

CCSS.HSA.REI.B.3

Solve for x: 5x + 3 = 23

• x = 4

• x = 8/5

• x = 26/5

• x = -4

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Six less than a number is divided by four. The result is 30. Write the equation and solve for the number.

• x/4 - 6 = 30

  x = 9

• 6 - x/4 = 30

  x = -96

• (x-6)/4 = 30

  x = 126

• (6-x)/4 = 30

  x = -114

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

• r = 12

• r = 14

• r = 4

• r = 42

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.3

Stevenson's Market is selling 3 packs of toothpicks for $0.87. How much will 10 packs of toothpicks cost at this price? Use a proportion and round your answer to the nearest cent.

• $6.97

• $2.61

• $27

• $2.90

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

Solve |3x-6|=21

Don't forget to write and solve TWO "mini" equations!

• x = -9 or x = 12

• x = 4 or x = -6

• x= -5 or x = 9

• x = -9 or x = 9

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.3

When you're solving an equation and your variables "disappear" and you get a FALSE statement, your solution is:

• ∅ or No Solution

• That never happens when solving an equation.

• ⊗ or Vector Product