6 Zara fences off a piece of land next to a wall to make a vegetable garden. The garden is a rectangle with the wall as one side of the rectangle. The area of the garden is 18 square metres. The width of the garden is x metres. (a) The total length of fencing required for the garden is y metres. Show that y=2x+18/x. (b) (i) Complete the table for y=2x+18/x . (ii) On the grid, draw the graph of y=2x+18/x for 1=<x=<9. (c) Use your graph to find the two possible widths of the garden if 14 metres of fencing is used. (d) The fencing costs $20 per metre. (i) Find the minimum amount it will cost Zara to build the fence. (ii) Zara wants to spend no more than $350 on the fence. Find the greatest possible width of the garden Zara can make.