Two companies are competing for a contract to sell the school wifi. Comporium charges a $100 fee for installation and $39.99 for each month of service.
Brighthouse charges a $20 fee for installation and $49.99 for each month of
service. For what number of months of service will Comporium cost more than
Brighthouse?

Ily begins solving the equation 4(x – 1) – x = 3(x + 5) – 11. her work is shown below. 4(x – 1) – x = 3(x + 5) – 11 4x – 4 – x = 3x + 15 – 11 3x – 4 = 3x + 4 how can her partial solution be interpreted?

Arandom number generator is used to model the patterns of animals in the wild this type of study is called

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?