Find the length of side x in the simplest radical form with a rational denominator

H(x)=4x2-5x h(-3) what is the answer?

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

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?