Expressions, Equations, and Inequalities

Taylor sells handmade bracelets for $7 each.
She spent $65 on materials.
She wants to make at least $100 in profit.

Let n represent the number of bracelets sold.

Which inequality represents this situation?

• 7n – 100 > n + 65

• 7n – 65 ≥ 100

• 7n – 165 > 0

  she must sell at least 24 bracelets

• n – 165 > 10

  she must sell at least 25 bracelets

Tags

CCSS.7.EE.B.4B

Which of the following ARE NOT steps that correctly justify how to solve the equation below?
Circle all that apply.

6 (x − 3) + 5 = 2 + 4x

• Subtract 5 from both sides (Inverse)

• Distribute (Multiply by 6)

• Add 2 to both sides (Inverse)

• Subtract 4x from both sides (Inverse)

Tags

CCSS.HSA.REI.A.1

• Plan A: $50 per month plus a one-time sign-up fee of $50

• Plan B: $50 per month plus a one-time sign-up fee of $70

What does the solution mean in this context?

• The two plans are equal for every month.

• The two plans are equal when m = 50

• The two plans will never cost the same, no matter how many months you stay.

• The two plans are equal only when m = 20

-5 + 23

Tags

CCSS.7.NS.A.1C

-14 - 11

Tags

CCSS.7.NS.A.1C

15 - 33

Tags

CCSS.7.NS.A.1C

-20 - (-8)

Tags

CCSS.7.NS.A.1C

28 + (-1)

Tags

CCSS.7.NS.A.1B

Josie has $47 left in her checking account. If she writes a check for $55, what will Josie's balance be?

• -$8

• $8

• $102

• -$102

Tags

CCSS.7.NS.A.1C

At 1am it will be -12°F. The weatherman predicts it will be 25° warmer tomorrow by noon. What will the temperature be by noon tomorrow?

Tags

CCSS.7.NS.A.3