According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly h
ousehold cell phone bills are normally distributed with a standard deviation of $11. a. What is the probability that a randomly selected monthly cell phone bill is less than $95?
Because it starts at 0 pounds costs 0 dollars, we know it starts at the origin and has no y-intercept. Because it rises up 20 dollars for every 5 pounds, we can use rise/run to do 20/5 to get an increase of 4 dollars per pound.
