Expressions and Equations Pre-Assessment

For the expression 5 + 2x + 7 + 4x, combine like terms and write an equivalent expression with fewer terms.

• 18x

• 7x + 11x

• 6x + 12

• 8x + 35

Which of these expressions is equivalent to 3(x - 2)?

• 3x - 6

• 3x - 2

• 3x + 2

• 3x + 6

Which of these expressions is equivalent to -2(x -5)?

• -2x -10

• -2x - 5

• -2x + 10

• -2x + 5

For the expression 4x + 3x, combine like terms and write an equivalent expression with fewer terms.

• 7x

• 12x

• 12x²

• 7x²

• None of these

The table shows Sandra's weekly earnings, y , based on the number of hours she works. Which equation can Sandra use to calculate her weekly earnings when she works x hours?

• y = 8x

• y = 5x + 40

• y = 10x

• y = 10x + 80

The table shows Sandra's weekly earnings, y , based on the number of hours she works. Which equation can Sandra use to calculate her weekly earnings when she works x hours?

​ (a)  

• y = 8x

• y = 5x + 40

• y = 10x

• y = 10x + 80

The equation for the table below is y=2x+5, fill in the missing values.

c

d

e

f

0

3

4

-1

7

9

Translate the phrase into an algebraic expression: "Seven less than twice a number."