9. the speed with which utility companies resolve problems is very important. georgetown telephone company reports they can resolve customer problems the same day reported in 70% of the cases. suppose 15 cases reported today are representative of all complaints. what is the probability:

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

The scatterplot represents the total fee for hours renting a bike. the line of best fit for the data is y = 6.855x + 10.215. which table shows the correct residual values for the data set?

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense