8 books with 2 sheets each and 1 extra sheet as leftover
Our system is the following :

As you see, the system has only one solution whenever the value of k is. Unlike you have not well written the system.
<span>This is a simple subtraction question. To find the answer, you simple need to subtract 15 from 104. This equals 89, so there were 89 4th graders at school that day in total. In the instance you're unsure that a subtraction equation is right, you can also add your answers back together to double check, so 89 + 15 = 104.</span>
Answer:
The bike whose position has greater y-coordinate.
Step-by-step explanation:
If Dorrian plotted the co-ordinates of the bikes with second on the x-axis and distance traveled on the y-axis, the x-coordinates of the two bikes will be the same.
But, the bike which went faster will have the greater y-coordinate and which followed the earlier will have the smaller y-coordinate.
Hence, the bike which has greater y-coordinate will win the race.