Will Someone please solve 10a - 10c. I need help with them and don't know how to solve it. Please answer as soon as possible.

Issof claims that the scale factor is 1/2. which statement about his claim is correct

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

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