Substituting Terms in Variables

Substitute x= 3 into the expression 3x+1

• 3

• 9

• 10

• 7

• 5

• 25

•  10

• 20

• 2

• 1

• -5

• 0

Pick the thing that we could use as a Variable

• 12

• 8

• 1

• k

Which choice shows substitution correctly?

• 3x - (-6x +3) = 10

• 3(-6x + 3) - y = 10

• 22

• 36

• 15

• 21

If x = 1, y = 3, and z = 2, what is the value of the expression 4xy + 3xz+ 7y?

• 46 

• 42

• 39

• 23

If a = 6 and b = 7,find the value of 15-a-b.

• 2

• 3

• 4

• 5

6q +m - m when m =8 and q= 3

• 63

• 24

• 18

• 1

What is the value of the expression, 9x² - 12x + 4, when x = 3?

• 22 

• 49

• 85

• 345