Permutations and combinations: I would love if someone could help

5. A TV station has a 8 hour-long TV shows to choose from in order to
fill 2 one-hour time slots. In how many ways can it fill the time
slots?

equal to

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

answer: c. is your answer

step-by-step explanation: get me a black leather coat