Lison and her family went out to dinner to celebrate the end of the summer. alison agreed to pay the tip from the money she earned from her summer job. the total cost of the meal was $50.00. alison left $9.00 for the tip. what percent tip did alison leave?

Lines p and q intersect. find the value of b. show your work. cite any theorems you use.

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?

Define multiplicative inverse. give an example of a number and its multiplicative inverse.