We assume all money is spent on new lighting. Since they currently have $160 and need $400 we can subtract what they currently have from what they need.
$400-$160 = $240
Since we know the price of the ticket and now know they need $240 we can divide our $240 with the price of each ticket ($3)
$240/$3 = 80
So the drama club has to sell 80 more tickets in order to afford new lighting
        
             
        
        
        
Answer:
f^-1(x)  = -1/8x +1/4
Step-by-step explanation:
To find the inverse of a function
Exchange x and y and then solve for y
y =-8x+2
Exchange x and y
x = -8y+2
Now solve for  y
Subtract 2 from each side
x-2 = -8y+2-2
x-2 = -8y
Divide by -8
(x-2)/-8 = -8y/-8
Distribute 
-1/8x +1/4 = y
f^-1(x) = -1/8x +1/4
 
        
             
        
        
        
Answer:
B 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
p = 16
Let me know if I'm wrong!