SF7 Unit 4 Test Review

Front

What is the remaining amount after spending on charities?

Back

If John received $150 and gave $40 to each of his three charities, he spent $120. Remaining amount = $150 - $120 = $30.

Front

Solve for x: -2x + 7 = 21

Back

x = -7

Front

What are two solutions to the inequality x < 8?

Back

Any numbers less than 8, e.g., 0.8 and 5.9.

Front

Identify the expression that does NOT represent the perimeter of a rectangle.

Back

Front

What equation can be used to determine how many games Dianne played?

Back

The equation is 3 + 4g = 19.

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, perform inverse operations to both sides of the equation.

Front

What does it mean to solve an inequality?

Back

To solve an inequality means to find all values of the variable that make the inequality true.

Front

What is the definition of a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value.

Front

What is the process of checking a solution in an equation?

Back

Substitute the solution back into the original equation to verify if both sides are equal.