A300.0-kg speedboat is moving across a lake at 35.0 m/s. what is the momentum of the speedboat?

The momentum (n) of object is the product its mass (m) and velocity (v).
                                      n = m x v
Substituting the known values, 
                                      n = (300 kg) x (35 m/s) 
Thus, the value of the momentum is 10,500 kg m/s.

If one were to put the y value into the equation, they could find out what x is for a certain value of y.  putting in the value of y (1), we get the equation: 1=4x-12=4xx=0.5this means that the value of x when why is 1 is x=0.5