Answer:
- 4x
Step-by-step explanation:

 
        
             
        
        
        
Answer:
The slant height of a regular pyramid is 
Step-by-step explanation:
we know that
The lateral area of a regular pyramid is equal to

where
LA is the lateral area
P is the perimeter of the base
l is the slant height
we have


substitute in the formula and solve for l




 
        
                    
             
        
        
        
X=9
so simple
it's vertical line
        
             
        
        
        
Answer:
f-¹(x) = (4- x)/ 3 
Step-by-step explanation:
inverse of a function is nothing but the value of x in terms of f(x) 
like 
if we write f(x) as y we'd get 
y = - 3x + 5 
so, ill express x in terms of y:-
y= -3x + 4 
- adding 3x on both sides of the equation 
 
y + 3x = -3x + 3x + 4 
- subtracting y on both sides 
 
y - y + 3x = 4 - y
3x = 4 - y 
- dividing the whole equation by 3
 
x = (4 - y)/ 3 
soo, the inverse of the function is x = (4- y)/ 3 
mostly we write the inverse in terms of x, hey! don't get confused, when i say this, I simply mean that we're gonna replace y with x and x with f-¹(x). 
therefore,
f-¹(x) = (4- x)/ 3 
 
        
                    
             
        
        
        
Answer:
c = 15t
Step-by-step explanation:
Given that:
Unit cost of Ticket = $15
Total cost = unit cost * number of tickets purchased
Total cost = c
Number of tickets purchased = t
C = $15 * t
c = 15t