Unit 2 Test Study Guide

Front

What does the inequality -2 ≥ n represent?

Back

This inequality means that n can be any number that is less than or equal to -2.

Front

How do you set up an equation to find the cost of each magazine if you bought 6 magazines and a comic book for $5.00 totaling $30.00?

Back

The equation is 6m + 5 = 30, where m is the cost of each magazine.

Front

What is the formula to calculate total earnings if a waitress earns $9.50 per hour and $35 in tips?

Back

The formula is 9.5h + 35 > 115, where h is the number of hours worked.

Front

If Eric earns $38 per day plus $12 for each sale, how do you determine the minimum number of sales needed to earn at least $110?

Back

You set up the inequality 38 + 12s ≥ 110, where s is the number of sales.

Front

What is the formula for the perimeter of a parallelogram with side lengths represented by c?

Back

The perimeter P is given by P = 2a + 2b, where a and b are the lengths of the sides.

Front

What does the term 'inequality' mean in mathematics?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other.

Front

What is the difference between an equation and an inequality?

Back

An equation states that two expressions are equal, while an inequality shows that one expression is greater or less than another.

Front

How do you solve the inequality 9.5h + 35 > 115 for h?

Back

Subtract 35 from both sides to get 9.5h > 80, then divide by 9.5 to find h > 8.42.

Front

What is the significance of the 'at least' phrase in inequalities?

Back

'At least' indicates that the value can be equal to or greater than a certain number.

Front

How do you simplify the expression 3c - 5 + 2c + 1 + 3c - 5 + 2c + 1?

Back

Combine like terms to get 10c - 8.