Easy math oliver needed to build 10 chairs to go with a dining room table that he had built. at the start of the second day he had completed 4 chairs, and by the end of second day of work, he had worked for 9 hours and completed 7 chairs in total. how many more hours must he work before he will finish all 10 chairs? a) 3 b) 9 c) 10 d) 18 oliver needed to build 10 chairs to go with a dining room table that he had built. at the end of one day of work, he drew a graph to keep track of his progress and estimate when he would finish. the graph he drew is shown where the x-axis represents the amount of hours he has worked and the y-axis is the number of chairs he has built. how many more hours must he work before he will finish all 10 chairs? a) 3 b) 9 c) 10 d) 18