On the graph below, point A(3, 4) and BC with coordinates B(4.3) and C(2, 1) are graphed, What are the coordinates of B' and Cafter BC undergoes a dilation centered at point A with a scale factor of 2?

Abari owns 100 shares of stock a and 45 shares of stock b. for the past month, his stocks have been fluctuating inversely. stock a decreased by m cents per share and stock b increased by n cents per share. which equation can be used to find the total change in value of jabari's shares per month?