The number of visits y to a new website quadruples every day. The function y = 12(4)^2 represents the number of visits, where x is the day.

a. Describe the domain and range.

b. How many visitors did the website have on the 3rd day?

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).

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What is the value of f(x) = 2.2 for f(-2)?