How do you use your line of best fit to calculate predicted sales at each price? Please help!

2.2.4 Fitting Linear Models to Data

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

Sole the equation 6n + 9 = -3n - 21 - 6 for n

Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation