A square has a side length that is represented by the expression 2x2 + 5x - 7. Which expression represents the perimeter of the square?
O A. 2x² + 5x - 7
O
B. 4x2 + 10x - 14
O
C. 8x2 + 20x - 28
D. 4x4 + 20x3 - 3x2 + 49

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