mathematics to model real-world situations. Directions Read the instructions for this self-checked activity.Type in your response to each question, and check your answers. At the en the activity, write a brief evaluation of your work. Activity An airplane cuts through the morning sky. For every 1,000 feet that it climbs, the outside temperature drops 20 degrees Fahrenheit. What is the rate of temperature change in degrees Fahrenheit per foot? Complete the steps below to answer the question. Part A Write the change in elevation and the change in temperature as rational numbers. square v

## Step 1The problem provides us with two quantities: the change in elevation and the change in temperature. The change in elevation is given as 1,000 feet and the change in temperature is given as 20 degrees Fahrenheit.## Step 2We need to express these quantities as rational numbers. A rational number is a number that can be expressed as the quotient or fraction of two integers, where is the numerator and is the denominator.## Step 3In this case, the change in elevation is 1,000 feet, which can be written as . This is because the change in elevation is a whole number, and any whole number can be expressed as a fraction with a denominator of 1.## Step 4Similarly, the change in temperature is 20 degrees Fahrenheit, which can be written as . This is because the change in temperature is also a whole number, and any whole number can be expressed as a fraction with a denominator of 1.