Chapter 1.4, Problem 30PPE

To determine

To write : an algebraic expression for total number of fires in f years.

Answer to Problem 30PPE

  $T=539.2\times 2\times f+129.1\times 2\times f$

Explanation of Solution

Given:

An average of $539.2$ fires each year by burning debris and average of $129.1$ fires each year from the campfires,

The word “Sum of” use for addition of two averages,

Use the formula of average,

  $\text{Average}=\frac{a+b}{2}$ ,

Where a and b are two numbers

Therefore

Write an algebraic expression for total number (T) of fires in f years.

  $T=539.2\times 2\times f+129.1\times 2\times f$