Can you help me please

Which expression is equivalent to -5(3x - 6/7)

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

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.