show the steps clearly

A boat on the ocean is 3 mi from the nearest point on a straight shoreline; that point is 7 mi from a restaurant on the shore. A woman plans to row the boat straight to a point on the shore and then walk along the shore to the restaurant. Complete parts (a) and (b) below. a. If she walks at 3 mithr and ms at2 mithr, at which point on the shore should she land to minimize the total travel time? To minimize the total travel time, the beat should land [I miles tram the restaurant. (pre an exact answer. using radicals as needed.)