3A- 1st Semester Exam

Front

What is the phrase that represents the expression '5x + 2'?

Back

the sum of five times a number x and two

Front

Simplify the expression: 24 ÷ 4 ⋅ 2 + (3² - 1 + 6)

Back

26

Front

Is the number 0.141414141414... rational or irrational?

Back

Rational

Front

Solve the system of inequalities by graphing: y < 2x + 1 and y > -x + 3

Back

Graph the lines and find the overlapping region.

Front

Solve the equation: |2a + 10| = 6

Back

a = -8, a = -2

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b ≠ 0.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) - often remembered as PEMDAS.

Front

What is an absolute value?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction.