Algebraic Expressions With Variables

How many terms are in the expression?

5x - 7y + 4

• 1

• 2

• 3

• 4

combines both numbers and letters using the arithmetic operations of addition (+), subtraction (–), multiplication (·), and division (÷) to express a quantity.

• algebraic expression

• variable

• coefficient

• term

symbols, often letters, that represent different values in various situations.

• terms

• variables

• expressions

• constant

a sentence with a minimum of two numbers or variables and at least one math operation

• coefficient

• variable

• expression

• distributive property

terms with the same variable raised to the same power.

• like terms

• variable

• term

• expression

Simplify the expression: 7+3(1 - 2x) 

• 21 - 6x

• 10 - 2x

• 10 - 20x

• 10 - 6x

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20

• 24

• 44

• 4

Evaluate 2r + 1      if   r = 3

• 6

• 5

• 7

• 8

Which expression represents twice the quantity of 11 less than k. 

• 11 -k

• k - 11

• 2k - 11

• 2(k-11)

Which of the following is equivalent to 5(2x + 6)?

• 10x + 30

• 10x + 6

• 40x

• 2x + 30