Im thinking its b because if I did it correctly, I put them least to greatest before adding 78 and got 77 as the median. if 78 is added, the median is a tie between 77 and 78. I think then you subtract it to find the new median? if so I got 1. and that's down from 77 I think I need to go back to fifth grade. help?

What is the value of x in the following equation. -x ^3/2 = -27

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

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?