Find a vector equation of a line through A(8, 14) and perpendicular to OA. O=(0,0)

How do i put 3(x+7) in distributive property

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

Which is the scale factor proportion for the enlargement shown?