If u wanted to find the depth of a submarine during a dive , would it be more reasonable to use an equation with the rate in feet per minute or feet per hour ? explain

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).

The table shows the total distance that myra runs over different time periods. which describes myra’s distance as time increases? increasing decreasing zero constant

100 points, hi, i’m not sure how to get the equation from the graph and table.