X + (x + 2) + (x + 4) + (x + 6) = 156
x + x + x + x + 2 + 4 + 6 = 156
4x + 12 = 156
- 12 - 12
4x = 144
4 4
x = 36
x = 36
x + 2 = 38
x + 4 = 40
x + 6 = 42
Answer:

Step-by-step explanation:
The given function is
f(x) = 4x
As we know
f(x) = y, which implies x= 
Therefore,
y = 4x
x = 
as x= 
So,

replacing y by x in the above expression

So our inverse function is 
Answer:
62.000124 in. cubed
Step-by-step explanation:
cm to inches: 0.3937007874 to 1
the side edges are 3.937007874
Since it's a square pryramid, all of the side lengths are equal. 3.937007874^2 is 15.500031.
The formula for a pyramid: base*height/3
15.500031*12/3 = 62.000124 in. cubed