Evaluating Algebraic Expressions

What are the variables in the following expression?

• 3, 4, 1 and 7

• z, x and y

• + and -

• 15

Find the coefficient in the algebraic expression.

• x

• 4

• 5

• 9

A coefficient is the number next to the variable.

• You multiply the coefficient times the variable

• You add the coefficient and the variable

• You subtract the variable from the coefficient

If   x=5
what is
2x+2

• 7

• 12

• 4

• 10

To​ (a)   ​ an algebraic expression means to ​ (b)   the known value of the variable and then follow the ​ (c)   to simplify the numerical expression into a single ​ (d)   .

• evaluate

• substitute

• order of operations

• value

• A

• B

• C

• D

Your favorite local band is selling merchandise and they have asked you to write an algebraic expression to represent their total profit. They are selling t-shirts (t) for $15 each and CDs(c) for $5 each.

• $400

• $275

• $5

Your favorite local band is selling merchandise and they have asked you to write an algebraic expression to represent their total profit. They are selling t-shirts (t) for $15 each and CDs(c) for $5 each.

• $400

• $275

• $5

What expression does this number line represent?

• 4n - n

• 2n + n

• 8n - 2n

• 16n - 4n

Find the value of the expression.

• -12

• 12

• 14

• -14