Expressions and Equations Open Up Resources

Which equation could be used to find the number (n) for the expression, 5 less than n is equal to 16?

• 16 - 5 = n

• 16 - n = 5

• 5 - n = 16

• n - 5 = 16

What is the value of b in the equation: 34 + b = 85

• 51

• 119

• 15

• 34

If x = 9 and y = 4, which expression has the greatest value?

• (x - y) + 8

• (x ∙y) - 20

• (x + y) + 4

• (x - y) ∙ 2

Four students were asked to factor the expression 45x - 15. Here are there responses: Which two students are correct?

• Eli and Robert

• Kate and Jan

• Jan and Eli

• Robert and Kate

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

c

d

e

f

4

3

-1

0

7

9

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

Which expression is equivalent to 5⁴?

• 125

• 3,125

• 625

• 20