Cranky mower to start her old lawn mower, rita has to pull a cord and hope for some luck. on any particular pull, the mower has a 20% chance of starting. (a) find the probability that it takes her exactly 3 pulls to start the mower. show your work. (b) find the probability that it takes her more than 10 pulls to start the mower. show your work.

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

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?

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?