Please help drag and drop each pair of a- and b-values next to the appropriate graph of an exponential function of the form f(x)= ab.

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).

Me. i can't figure out this question. give an explanation too. .

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points