Model the expression on the number line by drawing an arrow

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).

Through: (-3,-3) parallel to y= 7/3x+3

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab