When Serenity commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 39 minutes and a standard deviation of 5 minutes. Using the empirical rule, determine the interval that represents the middle 99.7% of her commute times.

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x