2. Two wheels revolve around a common axis; bigger one makes 15 and smaller one makes 20 revolutions in a minute, respectively. Starting with a certain point on the circumference downwards. After how many revolutions will they come together in the same position?

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