Which system of equations can be used to find the roots of the equation 12x^3-5x=2x^2+x+6?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn

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

50 points~ ! i have to turn this in tomarrow