3math questions will give brainliest if answered correctly

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

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?