Find the quotient and remainder for 52÷8

The parabola opens: y=√x-4 (principal square root) up down right left

What is the solution of log2  (3x  -  7)  =  3? 4 5

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?