Aplane lamina with mass density σ(x, y) = 4 + x2y2 occupies the region in the xy-plane bounded by x = 0, y = ex, and y = e. find the total mass m of the lamina, the moments mx and my, and the center of mass (x, y) of the lamina.

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x