I need help with this question ASAP please!!

What term makes it inconsistent y=2x - 4 ?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

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