Elisa needs money to repair her home air conditioner, so she pawns her bicycle. The pawnbroker loans Elisa $270. Eight days later, Elisa gets her bicycle back by paying the pawnbraker $285 pawnbroker charge Elisa? Assume 360 days in a year.
The pawnbroker charged Elisa a simple interest rate of %
(Round to the nearest whole number as needed.)

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