If $1 is invested over a 10-year period, then the balance A after t years is given by either A = 1 + 0.075 [t] or A = e0.07t depending on whether the interest is simple interest at 71 2% or continuous compound interest at 7%. Graph each function on the same set of axes. Which grows at a greater rate? (Remember that [t] is the greatest integer function discussed in Section 2.4.)