CPM Chapter 4

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing numbers and variables.

Front

What does it mean to solve for a variable in an equation?

Back

To solve for a variable means to find the value of that variable that makes the equation true.

Front

What is the equation for finding the value of y in the expression 8y = 18?

Back

To find y, divide both sides by 8: y = 18/8 = 2.25.

Front

How do you rewrite a percent as a fraction?

Back

To rewrite a percent as a fraction, divide the percent by 100 and simplify if possible.

Front

What is 150% as a fraction?

Back

Front

How do you evaluate an expression like 3x + 7 for a specific value of x?

Back

Substitute the value of x into the expression and perform the arithmetic operations.

Front

What is the value of 3x + 7 when x = 2?

Back

When x = 2, 3(2) + 7 = 6 + 7 = 13.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.

Front

Back

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for variables.