1. Find the critical numbers for f(x) = 2x -15x +24x-7. Use the Second Derivative Test for Extremes to determine whether they are maximums or minimums or neither. 2. Suppose you decide to create the rectangular garden in a corner of your yard. Then two sides of the garden are bounded by the existing fence, so you only need to use the available 80 feet of fencing to enclose the other two sides. What are the dimensions of the new garden of largest area?