2. Lego is coming out with a new set containing of 400 pieces. `Draw a vertical line on the plot corresponding to 400 pieces. Using only the data points, can you say how much the new set should cost? What could we use to predict how much the new set should cost? Write out the equation of the regression line using the letter a as a placeholder for the intercept and the letter bas a placeholder for slope. Next to each symbol label what the symbol represents. In order to find the regression line. we need to find a line which minimizes the sum of the square residuals. First, we will review what a residual is. Number of Bricks Vs. Price 100 Price in Dollars 200 400 600 800 Number of Bricks 3. Using the plot find the following: . Using only the plot, what is the predicted cost for a set containing 213 pieces? The dotted lines on the plot are there to help you. Round your answer to the nearest integer