What are the zeros of this function?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Put the equation in slope intercept form by solving for y

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?