Evaluating Simple Equations

10-3=

• 7

• 5

• 12

• 8

50-22=

55+25=

60−27=

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

3

-1

4

7

9

0

Evaluate 2r + 1      if   r = 3

Mathematical Equivalence

ON

Evaluate the expression.   Let g = 3    h = 9 
4h + 2g + 4

Mathematical Equivalence

ON

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

65+30=