To determine the value of , we want to be 1, so that . Notice that if , then , so the value of is simply . From the graph, it appears that , so therefore .
So how I would estimate is by see that each piece is going to be 1 and 1/6 but you have 6 and 7/8 feet of plywood so 1 can go into 6 six times but since you got that 1/6 for each piece is lower it down do about 4, so he can make about four. lol
