Rex is a salon owner and did 8 haircuts on monday, 8 on tuesday, 10 on
wednesday, 5 on thursday, and 15 on saturday. each haircut costs $10.50.
how much did rex earn? *
o $483.00
o $630.00
o
$438.00
o
$480.00

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?

Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .

What function has a range {yly< 5}? question on picture above^