Jamilla collected data comparing the weight and cost of pieces of sterling silver jewelry. her data is listed as (weight in ounces, cost in dollars): (5, 44.00), (8.5, 78.50), (12, 112.00), (10, 93.00), (7, 63.50), (9, 83.20).

a. plot the data on a set of axes.
b. use a ruler to draw a line that best approximates the data.
c. determine the equation of the line of best fit drawn in (b).
d. use your equation to predict the cost of a 50-ounce silver bracelet.