Expressions Voc

A mathematical expression is:

• a mathematical statement that contains a variable (EX: 5abc + 3).

• a mathematical statement that includes an equal sign (EX: 2x + 5 = 17).

• a mathematical statement that contains numbers and operations (EX: 5 + 15 - 7).

• a single number or variable, or number and variable.

A constant is:

• a symbol (usually a letter) that represents an unknown number than can change.

• 
  a single number whose value does not change.

• a number that is multiplied by the variable in an algebraic expression.

• the parts of an expression that are added or subtracted.

A variable is:

• a symbol (usually a letter) that represents an unknown number than can change.

• a number that is multiplied by the variable in an algebraic expression.

• a single number whose value does not change.

• the parts of an expression that are added or subtracted.

An algebraic expression is:

• a mathematical statement that contains numbers and operators (5 + 15 - 7).

• a mathematical statement that includes an equal sign (EX. 2x + 5 = 17).

• a mathematical statement that contains a variable (5abc + 3).

• a single number whose value does not change.

Translate the phrase into an algebraic expression: "Seven less than twice a number."

• 15

• 12

• 18

• 21

Translate the following sentence into an equation: "Eight times a number, decreased by 13, is equal to 35."

A term is:

• a symbol (usually a letter) that represents an unknown number that can change.

• a single number whose value does not change.

• a number that is multiplied by the variable in an algebraic expression.

• the parts of an expression that are added or subtracted.

A coefficient is:

• a symbol (usually a letter) that represents an unknown number that can change.

• the parts of an expression that are added or subtracted.

• a number that is multiplied by the variable in an algebraic expression.

• a number that does not change.

How many coefficients are in: 5y² + y - 2 + 3y + 5 - 8y²

• 5

• 4

• 3

• 2