Chapter 9.6, Problem 36CCR

To determine

Tostate: that whether the cleaning fee is proportional to the time or not.

Answer to Problem 36CCR

the cleaning fee is proportional to the time.

Explanation of Solution

Given information:

Therelation is:

Time (hours)	$1$	$2$	$3$	$4$
Cleaning fee	$\$30$	$\$60$	$\$90$	$\$115$

from the above table it can be observed that as the time is increasing the cleaning fee also increasing.

Thus, the cleaning fee is proportional to the time.