Intro to Variables and Algebraic Expressions

In the expression, 6g + 12, what is the variable?

• 12

• 6

• g

Simplify the following expression:

x + x + x + x + x

• x + 5

• 5x

• 5/x

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

A coefficient is __________.

• the variable

• a constant

• an exponent

• the number that comes before the variable

Simplify by combining like terms.
m + 9 - 4m

• 5m

• m + 5m

• -3m + 9

• 4m

6 (x + y + 7)

• 6x + 6y + 42

• 12xy + 42

• 6x + 6y + 7

• 6x6y + 42

-7(w - 4) + 3w - 27

• 4w + 15

• -4w + 1

w increased by 5

• w - 5

• 5w

• w + 5

• w / 5

In the expression, 6g + 12, what is the constant?

• g

• 12

• 6

The sum of x and 10

• 10x

• x-10

• x + 10