SOLUTION: Maggie pays $15 per month for her cell phone. She gets the first 200 minutes in the month free. After that it costs 8 cents per minute. Below is a table of the first 4 months of Ma

Algebra ->  Statistics  -> Normal-probability -> SOLUTION: Maggie pays $15 per month for her cell phone. She gets the first 200 minutes in the month free. After that it costs 8 cents per minute. Below is a table of the first 4 months of Ma      Log On


   

Question 1076709: Maggie pays $15 per month for her cell phone. She gets the first 200 minutes in the month free. After that it costs 8 cents per minute. Below is a table of the first 4 months of Maggie’s cell phone usage. What is the mean cost per month for Maggie’s cell phone?
Graph in the link: http://prntscr.com/ewxgza
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Find mean or average monthly cost:
MONTH         MINUTES   CALCULATE COST      MONTH COST
January        290      90%2A0.08%2B15       22.2
February       330      130%2A0.08%2B15      25.4
March          350      150%2A0.08%2B15      27
April          240      40%2A0.08%2B15       18.2


You can therefore compute the mean or average monthly cost...?