Expressions, Variables and Exponents

5g, if g = 4

• 20

• 9 

• 5

• 1

A variable is . . .

• an awesome number

• a number represented by a letter

• an infinite number

• a number multiplied by another number

Which expression matches the description above?

• 1/2(n - 7)

• 7(1/2n)

• 7n - 1/2

• 1/2n + 7

Which expression matches the description above?

• 1/2(n - 5)

• 5(1/2n)

• 5n - 1/2

• 1/2n + 5

Which expression matches the description above?

• 1/2(n - 3)

• 3(1/2n)

• 3n - 1/2

• 1/2n + 3

How many term(s), coefficient(s), and variable(s) does the above problem have?

• 5 - 4n + 6p

  has 3 term(s), 2 coefficient(s), and 2 variable(s)

• 5 - 4n + 6p

  has 2 term(s), 2 coefficient(s), and 2 variable(s)

• 5 - 4n + 6p

  has 2 term(s), 1 coefficient(s), and 2 variable(s)

• 5 - 4n + 6p

  has 3 term(s), 2 coefficient(s), and 1 variable(s)

How many term(s), coefficient(s), and variable(s) does the above problem have?

• 3 - 7z + 8t

  has 2 term(s), 1 coefficient(s), and 2 variable(s)

• 3 - 7z + 8t

  has 2 term(s), 2 coefficient(s), and 2 variable(s)

• 3 - 7z + 8t

  has 3 term(s), 2 coefficient(s), and 2 variable(s)

• 3 - 7z + 8t

  has 3 term(s), 2 coefficient(s), and 1 variable(s)

How many term(s), coefficient(s), and variable(s) does the above problem have?

• 5n + 3 - 2(4 - g)

  has 4 term(s), 1 coefficient(s), and 1 variable(s)

• 5n + 3 - 2(4 - g)

  has 4 term(s), 2 coefficient(s), and 2 variable(s)

• 5n + 3 - 2(4 - g)

  has 5 term(s), 2 coefficient(s), and 2 variable(s)

• 5n + 3 - 2(4 - g)

  has 5 term(s), 2 coefficient(s), and 1 variable(s)

How many term(s), coefficient(s), constant(s), and variable(s) does the above problem have?

• 2r + 17 - y

  has 2 term(s), 1 coefficient(s), 1 constant(s), and 2 variable(s)

• 2r + 17 - y

  has 2 term(s), 2 coefficient(s), 1 constant(s), and 1 variable(s)

• 2r + 17 - y

  has 3 term(s), 1 coefficient(s), 1 constant(s), and 2 variable(s)

• 2r + 17 - y

  has 3 term(s), 2 coefficient(s), 1 constant(s), and 2 variable(s)

Which expression(s) have a value of 75 when x=5?

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