Variables

What is a variable in Algebra?

• Something that changes

• An unknown value

• An equation

• A numeric expression

What is an algebraic expression made of?

• Numbers and operations

• Numbers and multiplication

• Addition and multiplication

• Numbers and variables

Create an algebraic expression that represents 8 more than z

• z - 8

• z + 8

• 8 - z

The product of 8 and m

• 8m

• m8

• m + 8

• 8 +  m

5 less than the product of 6 and n

• 5 - 6n

• 6n + 5

• 6n - 5

• 5 + 6n

If y = 15, evaluate the following expression: 20 + y

• 5

• 3

• 20/15

• 35

Evaluate t/13 if t =65

• 52

• 845

• 5

• 78

13x - 4 when x = 5

• 51

• 9

• 14

• 61

6x = 24 Solve for x.

• x = 8

• x = 4

• x = 18

• x = 3

Ms. Martinez's class has a total of 22 students, half of the students brought picture money. 6 students bought the $10 package, and the rest bought the $15 package.  Which algebraic equation shows the total amount spent on the $10 package when t represents the total.

• 10 x 6 = s

• 5 x 10 = s

• 11 x 10 = s

• 10 x 15 = s