Expressions and Equations

Which of the following expressions is equivalent to a + a + b + b + b?

• 2a + 3b

• a + 3b

• 5 + a + b

• 5ab

Which of the following expressions shows 10 less than m?

• 10 - m

• m - 10

• 10m

• m + 10

Which of the following expressions is equivalent to 6 c ?

• 6 + c

• c + c + c + c + c + c

• 6 + 6 + 6 + 6 + 6 + 6

• 6 / c

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

• A
• B
• C
• D

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5

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

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

c

d

e

f

4

9

3

7

-1

0