To find the difference between meter and centimeter, base it on the power of digit-to-decimal or digit-to-hundreds place. Simplified, to find a meter and centimeter difference, divide the centimeter by 100.
Example number: <em>Let's say </em>35 is your centimeters. Your meters would be 0.35.
Victoria's method is linear because the number of minutes increase by an equal number (15) every month.
Workings in the attachments below. The green line is the function that has been set up for Victoria. The lines that form a curved looking graph belong to the function that was set up for Zach.