A car plant in Detroit, Michigan produces 3 cars every hour. The formula for the relationship between the number of cars produced (c) and the time (t, in hours) c = 3t .The slope of the line produced when this relationship is graphed is

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).

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Can someone me and do the problem plz so i can understand it more better