Preview: t xxxx 10Find xxx optimal present xxxxx of the xxxxxxxx (Hint: xxx x graphingutility xx graph the xxxxxxxxx P(t), and xxxx the xxxxx xx t0 xxxx gives a xxxxxxx the graph, xxxx P(t0)), xxxxx xxx slope xx the tangent xxxx is 0 xxxx graph xx xxxx on xxx interval (0, xxx looks like xxxxxxxxxx is xx xxxxxxxxxx tangent xxx this graph xx the interval x < x xxxx 10 xxx optimal present xxxxx would appear xx be xxxxxxx xx t x 0 3 xxxx the equation xx the xxxx xxxxxxx to xx the point xxxxx x = x What xxxx xxxx tell xxx about the xxxxxxxx of the xxxxx when x x 0?When x = 0, xxx value of xxx function xxx xxxx means.....