Unit 2 Test Study Guide

Front

What does the variable represent in the equation for Doug's postcard mailing costs?

Back

The number of stamps.

Front

Which graph represents the inequality -2 ≥ n?

Back

Graph A.

Front

What inequality represents how many hours the waitress worked if she earned more than $115?

Back

9.5h + 35 > 115.

Front

What is the minimum number of sales Eric needs to make to earn at least $110?

Back

He needs to make at least 6 sales.

Front

Simplify the expression: -3(4x - 8y) + 7y + 4 - 10.

Back

-12x + 31y - 6.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols like >, <, ≥, or ≤.

Front

What does 'at least' mean in mathematical terms?

Back

'At least' indicates a minimum value that must be met or exceeded.

Front

How do you solve for a variable in an equation?

Back

Isolate the variable on one side of the equation using inverse operations.

Front

What is the purpose of using variables in equations?

Back

Variables represent unknown values and allow for generalization in mathematical expressions.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its most basic form.