Y varies inversely as x; x = 3 when y=-2. What is the constant?

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol