Forty grams of iodine 131, a radioactive material, decays according to the equation a(t)=40e^(-0.087t) (t is in days and a is the amount present at time t) a. how much iodine 131 is remaining after 5 days? b. when will 10 grams of iodine 131 be left?

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