In 2005, the price of gasoline was $2.27. The price In 2011 was $3.52. a) What is the average rate of change? Include appropriate units. b) Write a function and use it to predict the cost of gasoline in 2020.

In 2005, the price of gasoline was $2.27. The price In 2011 was $3.52. a) What is the average rate of change? Include appropriate units. b) Write a function and use it to predict the cost of gasoline in 2020.

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter8: Introduction To Functions

Section8.9: Direct Variation

Problem 20OE

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Concept explainers

Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as:

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In 2005, the price of gasoline was $2.27. The price In 2011 was $3.52.
a) What is the average rate of change? Include appropriate units.
b) Write a function and use it to predict the cost of gasoline in 2020.
Function:
Predicted Cost of Gas in 2020:

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