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Your car's gas tank is full and you take a trip. You travel 212 miles, then you fill your gas tank up again and it takes 10.8 gallons. If you designate your change in distance as 212 miles and your change in gallons as 10.8 , what is the average rate of change of gasoline used, measured in miles per gallon?

Short Answer

Expert verified
19.63 miles per gallon

Step by step solution

01

Identify the Variables

The change in distance, \(\triangle d\), is 212 miles, and the change in gasoline, \(\triangle g\), is 10.8 gallons.
02

Write the Formula for Average Rate of Change

The average rate of change can be calculated using the formula: \[ \text{Average Rate of Change} = \frac{\triangle d}{\triangle g} \]
03

Substitute the Values into the Formula

Plug in \( \triangle d = 212 \text{ miles} \) and \( \triangle g = 10.8 \text{ gallons} \) into the formula: \[ \text{Average Rate of Change} = \frac{212}{10.8} \]
04

Calculate the Result

Perform the division: \[ \text{Average Rate of Change} = \frac{212}{10.8} \approx 19.63 \text{ miles per gallon} \]

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Distance
In the context of the given exercise, distance refers to how far you travel during your trip. Here, the distance is specified as 212 miles. Distance is an important variable when calculating rates such as miles per gallon. To break it down:
  • The distance you travel is the numerator in the average rate of change formula.
  • Distance is usually measured in units like miles, kilometers, or meters.
Knowing your total distance can help you understand your travel efficiency. The more miles you cover with the same amount of gasoline, the more efficient your travel is in terms of fuel consumption.
Gasoline Consumption
Gasoline consumption is the amount of fuel your car uses over a given distance. In this exercise, you refill your tank with 10.8 gallons of gasoline after traveling 212 miles.
  • Gasoline consumption is the denominator in the average rate of change formula.
  • It's generally measured in gallons or liters.
Understanding how much gasoline your car consumes is crucial for calculating efficiency.
For example, knowing you used 10.8 gallons over a distance of 212 miles helps you determine your car’s fuel efficiency in miles per gallon (mpg).
Miles per Gallon
Miles per gallon (mpg) measures your car’s fuel efficiency. It's calculated as the average rate of change of gasoline used. This metric tells you how many miles your car can travel per gallon of gasoline. To find it, use the formula: \[ \text{Average Rate of Change} = \frac{\triangle d}{\triangle g} \] Where:
  • \[ \triangle d \] = Change in distance (212 miles in this case)
  • \[ \triangle g \] = Change in gasoline (10.8 gallons in this case)
Substituting the values: \[ \text{Average Rate of Change} = \frac{212}{10.8} \] Performing the division: \[ \text{Average Rate of Change} \approx 19.63 \text{ miles per gallon} \] Understanding your vehicle’s miles per gallon helps you gauge its fuel efficiency and plan for trips, budget for fuel costs, and understand the environmental impact of your driving.

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