We can substitute the first equation which is solved for N into the second equation. Every place we see an N in the second equation, we replace it with D+122
You would have to get the container and put water in it but the container has to hold more than 1 liter so you would see where the water is at the measured point.
We have a mean price of $4500 this means that in the 8 cars we have cars with higer and lower prices than $4500 but that if we have to give the same price to 8 cars that would be $4500. Then to know the total price of the all 8 cars we just have to multiply:
