Mary has one-dollar bills and five-dollar bills in her purse. She has a total of $28. Let x represent the number of one-dollar bills. Find the domain and
range

What is the common difference in the following arithmetic sequence 7,3,-1,-5

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?

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).