A kayak travels in a lake at an average speed of 35 m/min. If the perimeter of the lake was 8400 m, how many hours does it take for the kayak to travel around the whole lake?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

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?

Change negative exponents to positive. then solve. round to four decimal places