Title: Unit 1 Quiz
Course: Technical Math for Industry

Q: What is the best definition of "algebra"?
- The branch of mathematics that deals with operations on sets of numbers and relationships between them. (Correct. The study of algebra is concerned with operations on sets of numbers and relationships between them. Working algebraically often includes both variables and numbers.)
- The branch of mathematics that uses only variables, not numbers, to represent values. (Incorrect. Algebra problems do not have to include numbers, but they often do.)
- The branch of mathematics that seeks to define the value of x. (Incorrect. While you may often be asked to solve for x in an algebra problem, the scope of algebra is much broader than this.)
- The branch of mathematics that uses only numbers, not variables, to represent values. (Incorrect. The branch of mathematics that uses only numbers is called arithmetic, not algebra!)
A: The branch of mathematics that deals with operations on sets of numbers and relationships between them.

Q: Which of the following inequalities is not a true statement?
A: (a choice with no text)
If right: Correct. is not true; 5 is not less than or equal to 3!
If wrong: Incorrect. Recall that an inequality like can be read "a is less than b", and can be read "a is less than or equal to b." Knowing this, which of the inequalities is false?
If wrong: Incorrect. Recall that an inequality like can be read "a is less than b", and can be read "a is less than or equal to b." Knowing this, which of the inequalities is false?
If wrong: Incorrect. Recall that an inequality like can be read "a is less than b", and can be read "a is less than or equal to b." Knowing this, which of the inequalities is false?

Q: Use the order of operations to evaluate this expression:
- 7 (Correct. You evaluated this expression correctly by applying the order of operations.)
- 27 (Incorrect. To evaluate this expression, first perform all calculations within parentheses. This means that the expression can be rewritten . Now can you multiply, then add and subtract from left to right?)
- 69 (Incorrect. To evaluate this expression, first perform all calculations within parentheses. This means that the expression can be rewritten . Now can you multiply, then add and subtract from left to right?)
- 9 (Incorrect. To evaluate this expression, first perform all calculations within parentheses. This means that the expression can be rewritten . Now can you multiply, then add and subtract from left to right?)
A: 7

Q: Which of the following equations does not apply the Order of Operations correctly?
A: (a choice with no text)
If wrong: Incorrect. Remember the order of operations: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction. In one of these equations, subtraction occurs before multiplication. Which one is it?
If right: Correct. The one that is not solved correctly is . Since multiplication should be evaluated before subtraction, , which equals 0.
If wrong: Incorrect. Remember the order of operations: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction. In one of these equations, subtraction occurs before multiplication. Which one is it?
If wrong: Incorrect. Remember the order of operations: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction. In one of these equations, subtraction occurs before multiplication. Which one is it?