Which expression is equivalent to (9x^2+2x-7)(x-4) A). x(9x^2+2x-7)-4
B). -4x(9x^2+2x-7)
C). (9x^2+2x-7)(x)+(9x^2+2x-7)(-4)
D). x(9x^2+2x-7)+4(9x^2+2x-7)

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