The function f(x) = -x is shown on the graph. Which statement is correct?
Ty
7
6
5
4
3
O The domain of the function is all real numbers less
than or equal to -1.
O The range of the function is all real numbers greater
than or equal to 0.
O The range of the function is all real numbers less than
or equal to 0.
O The domain of the function is all real numbers less
than or equal to 0.
2
1
- -6-5-4-3
-2 -1.
1
2
3
4
5 6
7 x
-2
-3
-4
5
-6

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

What is the value of x when x + 7 = 21?