Combining Like Terms, Expressions, One and Two Step Equations and Inequalities

What is the solution of 9 + k = 18

• 18

• 9

• 27

• 7

What is the first step to solve this equation:
11 - 3x = 44

• Subtract 11 from both sides

• Divide  - 3 on both sides

• Add 3 to both sides

• Add 11 to both sides

Select all expressions that are equivalent to 6x+1−(3x−1)

• 6x+1−3x−1

• 6x+-3x+1+1

• 3x+2

• 6x−3x+1−1

• 6x+1+-3x−-1

Lin got a $50 gift card to an online music store. She uses the gift card to buy an album for $9.99. She also wants to use the gift card to buy some songs. Each song costs $1.29. Which of these inequalities describes this situation, where n is the number of songs Lin wants to buy?

• 9.99+1.29n≥50

• 9.99+1.29n≤50

• 9.99−1.29n≥50

• 9.99−1.29n≤50

Which number line shows all the values of x that makes the inequality true?

• a

• b

• c

• d

-6k + 7k=

• k

• -k

• 12k

• -12k

Simplify the following expression:
19 - ( 3 - 5b)

• 16 + 5b

• 21 + 5b

• 16 - 5b

• 21 - 5b

Simplify: -2(y - 4) + 5y

• -7y + 8

• 3y + 8

• 3y - 8

• -7y - 8

Simplify the expression:
6 + 2(7x - 3) 

• 12 + 7x

• 14x

• 14x + 3

• 9 + 7x

Solve for t.

6t + 4 ≤ -2

• t ≤ -1 

• t ≤ 1

• t=1

• 1=t