Given Number of shirts bought by Jamal in Massachusetts =4.The question is asking us to find the money spent by Jamal after paying sales tax at the rate of 5% when cost of each shirt is $16.
Cost of 1 shirt= $16
Cost of 4 shirts = 4x16=$64.
Sales tax on the shirts = 5% =0.05(in decimal form)
The correct answer is: <span>D. The regression line is not a good model because the points in the residual plot form a curve. (i know this because i just passed the test ;) )</span>