B. where in these measurements is the greatest potential for error and how can you
protect against introducing high degrees of error into your measurements.

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

If your workout exceeds an hour you should substitute "a sports drink" for water.hope my answer has you : )