Amaya's test scores in algebra 1 are 78 and 91. she has one more test left and wants to earn a b for the course, which is from 80-89 inclusive. write a compound inequality to represent the situation

Can anyone me with 32,33,36,37,and 40.

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?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0