Enrique took his family out for dinner. he planned to olease a 15% gratuity on the bill. what is the tortola cost of the bill was $123.50

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

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?

What does the sign of the slope tell you about a line?