A measurement correction changes by the same amount over four dial marks. Let E(z) represent the corrected measurement, where z is the number of dial marks. The initial value at z = 0 is -6 measurement units. For every increase of 4 marks in z, the value increases by 10 measurement units. Use the rate per 1 unit of the input variable. Which option gives the correct linear function and the predicted value when z = 8?