Please help I will reward brainliest

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).

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did