Representing Expressions

How many terms are in the expression below:
3x - 6 + 4b + 5 + 7 - 2x

• five

• eight

• six

• nine

4a + 9 + a

• 5a + 9

• 3a-9

• 3a + 9

• 5a - 9

Simplify:
-1x + y - z + 10z + 2x - 10y

• 1x - 9y + 9z

• 1x - 9z - 9y

• -1x - 9z - 9y

• -1x - 9 - 9y

Simplify the expression: -5(x + 4)

• 5x + 4

• -5x + 4

• -5x - 20

• -5x + 20

Which choice shows the simplified version of the following expression?

• 7x

• 2x + 6

• 2x + 7

• 2x - 8

5(a + 6)

• 5a + 6

• a + 30

• 5a + 30

• 5a - 30

5(2x+5)

• 10x + 5

• 10x + 25

• 7x + 10

• 7x + 25

Simplify the following expression:
3 + 5x + 8 - 2x

• 7x - 11

• 7x + 11

• -3x + 11

• 3x + 11

Simplify.
-8 + 2x + 5 + 11x

• 13x - 3

• 13 + 13x

• 10x

• 13x + 3

-3(x - 4)

• -3x - 12

• 3x - 12

• 3x + 12

• -3x + 12