Six friends go out to eat. the bill, including tax and tip, came out to $84.00. two of the friends paid one–half of the bill. the other four friends paid the other half. how much money did each of the four friends have to pay? assume each of the four friends paid the same amount.

The customer price index(cpi), which measures the cost of a typical package of customer goods, was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely. use data points to find such a line and then estimate the requested quantities