Seventy-one times four plus x times four

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.