Problema Solution
on Saturday Alberto filled his right rear tire with air at the gas station around the block from where he lives. Three days later the tire pressure in that tire measured 26 PSI. On the following Saturday one week after he had originally filled the tire, the tire pressure measured 18 PSI. Assume that the tire has been losing tire pressure at a constant rate since he filled the tire. Find the expression.
Answer provided by our tutors
we calculate "loss of pressure/number of days" to determine an average pressure loss per day
a total of 7 days
(26-18)/(7) = 1.142
average pressure loss is approximately 1.1 psi/day