Solve the following system of equations.
4x + 7y – 2z = 0
3x – 5y + 3z = 9
3x + 6y – z = 1
choices:
a.(1, 0, 2)
b.(–1, 0, –2)
c. (1, 0, –2)
d.(–1, 0, 2)

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score