What is 19/22 as a decimal rounded to the nearest tenth

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

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).

Ineed to find the answer to number 2