8(x-2)-3(1-x)=9(x+2)+1

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 lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply