The perimeter of a rectangle is equal to 20. if the length is tripled and the width is doubled, the new perimeter is increased by 26. what is the length of the original rectangle?

Answer for 10 points show work you guys in advanced < 3

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

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?