School guidelines require that there must be at least 2 chaperones for every 25 students going on a school trip. how many chaperones must there be for 53 students? a. 4 chaperones b. 5 chaperones c. 27 chaperones d. 2 chaperones

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

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?

What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3