hildegard, an intelligent and charming Holstein cow, grazes in a very large, mostly barren pasture with a few patches of lush grass. when she finds a new grassy area, the amount of grass she gets from it is equal to the square root of the number of hours, h, that she spends grazing there. Finding a new patch of grass on which to graze takes her 1 hour. Since hildegard does not have pockets, the currency in which her costs are measured is time. what is the total cost to hildegard of finding a new plot of grass and getting y units of grass from it?