You and a friend tutor for a total of 12 hours. Use the tape diagram to find how many hours you tutor.

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 sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!