Why did so many people answer this question

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

If m 17 27 90 63 ** picture is attached

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars