" Tickets for a school talent show are sold out. The auditorium has 5 sections. Each section has 16 rows with 25 seats in each row. Each ticket
costs $4. How much money is raised in ticket sales?
Any help? Please

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).

Given that abcd is a rhombus, what is the value of x?

Find the domain and range of the following function f(x) = 51x - 21+ 4