Given that ax²+bx+c= 0 and that a, b, and c are integers, match each of the following values of the discriminant to the type of solutions. The discriminant is -3 two real rational N [ Select] The discriminant is 9 one real two imaginary The discriminant is 3 two real rational two real irrational The discriminant is O​

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?