Expressions and Equations Review

Values for the variables, A, B, and C are graphed on the number line shown. Choose all the true statements below.

• A+B is a negative number.

• B+C is equal to zero.

• A+C is a positive number.

• A-B is a negative number.

Select all equivalent values

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Choose all the expressions equivalent to 3(2x+1)

• 6x+3

• 3(1+2x)

• 3(2x)+1

• 2x+1+2x+1+2x+1

Which is the solution of the inequality 2x-4≥-6?

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• 15

• 12

• 18

• 21

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

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

Jenna has $235 in savings. She is able to save $25 per week. If she wants at least $400 in her savings. If w is the number of weeks, express this situation in an inequality.

• 235w+25<400

• 235w+25>400

• 235+25w≥400

• 235+25w≤400

An inverse operation is

• reversing the sign in an inequality

• using the opposite operation to solve equations

•  A number’s distance from zero

One difference between equations and expressions would be...

• you solve both of them using inverse operations.

• you flip the symbol when you multiply or divide by a negative

• equations have an equals because they show two equal expressions. Expresions have terms and operations.