Technic started out with $15 and saved $3.50 each day what expression represents the total amount kayla save

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?

How do i multiply two digit numbers

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?