

Solve for y

let's put our equation first

Flip the equation

Now follow the rule of 


_________________________

_________________________



add
to both sides

Divide both sides by 


would equal 
If you have snap you can use that just hold down on screen your problem
Well, the keyword here is One of the performers insist on being the last.
So, the amount of performers that we can arrange freely is 7 performers.
Different ways we can schedule their appearance is :
7 ! = 7 x 6 x 5 x 4 x 3 x 2 x 1
= 5040
hope this helps
Answer:
D
Step-by-step explanation: