X+ y = 8
1/2x - 1/2y = 3

do these equations have one solution, no solution, or infinitely many solutions?

Answer this question! 30 points and brainliest!

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

What is the value of x? enter your answer in the box.