The table below shows the velocity y, in miles per minute, of a toy car at different times x, in minutes:

time (x)
(minutes) 10 20 30 40
velocity (y)
(miles) 0.2 0.8 0.1 0.4

part b: what is the value of the slope of the graph of velocity versus time between 10 minutes and 20 minutes, and what does the slope represent? (3 points)

The value of the slope of the graph of the velocity versus time between 10 minutes and 20 minutes would be .06. I got to this answer by getting the changes in the rise (y) over run (x) of the table:

slope = y2- y1 / x2-x1
= .8-.2 / 20-10 mi / min
= .6 / 10 min
= .06 

Then for the follow up question, the slope represents the distance traveled of the toy car (in miles). 

The answer would be 27 because assuming that each package has 1 bar of soap and 1 tube of toothpaste, after 27 packages they would run out of toothpaste