Which fraction is greater than the fraction 3: 8,
a. 1: 4
b. 7: 16
c. 1: 8
d. 3 : 16

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 of the functions graphed below has a removable discontinuity?

Plz hurry evaluate the expression a+b where a=8 and b=19