I need help on these pls, answer choices are, Algebra, Reciprocal, Quotient, Pythagorean

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

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

Show all work to identify the discontinuity and zero of the function f of x equals 6 x over quantity x squared minus 36