BUSINESS Two competing stores, store A and store B, opened the same year in the same neighborhood. The annual revenue (R) (in millions of dollars) for each store (t) years after opening approximated by the polynomial models below.
A: R(t) = 0.0001(-t^4 +12t^3 -77t^2 +600t +13,650)
B: R(t) = 0.0001(-t^4 +36t^3 =509t^2 +3684t +3390) Using a graphing calculator, graph the models from t=0 to t=10, with the range of 0 to 2 for R. Find the x-coordinate of the intersection of the graphs, and interpret the graphs.