Chapter 1.1, Problem 20P

Write a rule in words and as an algebraic expression to model the relationship in each table.

Dorothy gets paid to walk her neighbor’s dog. For every week that she walks the dog, she earns $10.

To determine

To calculate: The algebraic expression and rules in words for the given relation in the table.

Answer to Problem 20P

The algebraic expression is $p=10w$ and the rule is to find the pay, the number of weeks multiplied by 10.

Explanation of Solution

Given information: Dorothy earned $10 for each week that she walked her neighbor’s dog. Also a table given showing the weeks (w) and the payment (p) she got.

Calculation:

Let, the number of weeks be w.

For each week Dorothy got paid = $10.

For w weeks she got

$\$(10\times w)=\$10w$

$\therefore$ The expression is $p=10w$ , where p is the pay.

In word, the rule is to find the pay, the number of weeks multiplied by 10.