Evaluating, Simplifying and Writing Expressions

Write an expression that represents the height of a tree that begins at 8 feet and increases by 2 feet per year. Let y represent the number of years.

• 8 + 2y

• 8 ÷ 2 + y

• 8 + 2 - y

• 8 - 2y

Evaluate the expression −10 − 2d given d = −5.

Evaluate the expression −32 ÷ f² given f = −4.

Evaluate the expression fe ÷ d + 2 given d = −5, e = 10, f = −4.

Write an expression for the following situation, then solve using the given values: Emelia earns $8.74 per hour plus a gas allowance of $3.50 per day at her job. Write an expression that represents the total Emelia’s job will pay in a day when she works.

• 8.74h + 3.50

• 3.50h + 8.74

• 3.50 + h + 8.74

• 8.74 - 3.50h

Simplify the expression:

-1.3f + 0.4j - 12 - 1 + 2.9f

Simplify the expression.

8 - 4y + (-2y) + 5

Which expression is equivalent to -2v + (-4) + 8 + (-3v)

• -5v

• 7v

• -6v + 5

• -5v + 4

Simplify the following expression: n + 4.5 - 0.3n - 3

State the number of terms in each expression: 21 ÷ a − 8c + 14b • 26