Open Up Resources Unit 4 Test Review

Front

What is the formula to calculate savings after a percentage discount?

Back

Savings = Original Price × Discount Percentage

Front

If a cell phone costs $120 and is reduced by 30%, how much is the savings?

Back

$36

Front

How do you calculate percent change in temperature?

Back

Percent Change = (New Value - Old Value) / Old Value × 100%.

Front

If the temperature changes from 10° to 15°, what is the percent change?

Back

50% increase

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative sizes of two or more values.

Front

In a ratio of girls to boys of 3:8, if there are 48 boys, how many girls are there?

Back

18 girls

Front

What is a double number line?

Back

A double number line is a visual representation that shows two related quantities and their relationships.

Front

If Sugar: 12 corresponds to Flour: 8, what would be the next corresponding values?

Back

Sugar: 8, Flour: 12

Front

What is the constant of proportionality in the equation y = 14x?

Back

14

Front

How do you find the constant of proportionality in a linear equation?

Back

It is the coefficient of the variable x in the equation y = kx.