A boat on the ocean is 5 mi from the nearest point on a straight shoreline; that point is 9 mi from a restaurant on 5 mi the shore. A woman plans to row the boat straight to a point on the shore and then 9mi walk along the shore to the restaurant. Complete parts (a) and (b) below. . . . a. If she walks at 3 mi/hr and rows at 2 mi/hr, at which point on the shore should she land to minimize the total travel time? To minimize the total travel time, the boat should land 9 -215 miles from the restaurant. (Type an exact answer, using radicals as needed.) b. If she walks at 3 mi/hr, find the minimum speed at which she must row so that the quickest way to the restaurant is to row directly (with no walking)? The minimum speed she must row is mi/hr. (Type an exact answer, using radicals as needed.)