Raj leaves his house on his bicycle at an average speed of 10 miles per hour. his friend, ruth, leaves 1/2 hour later, following the same route and averaging 14 miles per hour. at what distance, in miles, from raj's house will ruth overtake him?

What is the pattern in the values as the exponents increase?

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

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?