Juanita wishes to have a rectangular garden in her backyard with an area of 60 H2. Letting x denote the width of '1\" 120 x}= 276+ I 3;\" h- :he garden, find a Function f in the variable x giving the length of the fencing required to construct the garden. I What is the domain of this function? (Enter your answer using interval notation.) [0,60] X 9. [MBA Points] DETAILS PREVIOUS ANSWERS The total world population is forecast to be em = 0.00015? 0.0593? + 0.881\" + 5.04 (o s t g 10} in time t, where t is measured in decades, with E' = 0 corresponding to 2000 and P(t} is measured in billions. (a) when is the total world population forecast to peak? In what year? You MUSTjusb'fy that your result is an optimal value. t = x {Round your answer down to the nearest tenth.) The corresponding year is 20?? x . [Round your answer down to the nearest year.) (b) At what number will the population peak? {Round your answer to two decimal places.) 3. [-10.1 Points] ASK YOUR TEACHER The owner of the Rancho Grande has 2944 yd of Fencing with which to enclose a rectangular piece of grazing land situated along the straight portion of a river Assume that fencing is not required along the river (see the gure below). Letting x be the length (in yd} of the side of rectangular piece of land not parallel to the stlaight portion ofa river, nd a Function f in the variable x giving the area of the enclosed land. 90!) = What is the domain of this Function? (Enter your answer using interval notation.)