Semester Exam Review

Front

What inequality models the number of hours Jackson needs to spend reading this week if he needs to read at least 2 hours?

Back

r ≥ 2

Front

Solve for x: -6x = -72

Back

x = 12

Front

What expression represents how many pages Claudia has left to read after w weeks if she reads 20 pages a week from a 240-page book?

Back

240 - 20w

Front

Which value for x makes the inequality -3x > 18 true?

Back

x = -8

Front

What is the mean of the following numbers: 76.5, 70.2, 63.0, 71.9, 73.4?

Back

Mean = 71

Front

Define an inequality.

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 an equation with a variable on both sides?

Back

Combine like terms and isolate the variable on one side of the equation.

Front

What does it mean to 'isolate the variable' in an equation?

Back

To isolate the variable means to get the variable alone on one side of the equation to solve for its value.

Front

What is the formula for calculating the mean of a set of numbers?

Back

Mean = (Sum of all values) / (Number of values)