Answer:
, 5.6
Or rounded it would be 6.
I hope I did this right. :)
This will be D.Exponential decay hope this helps
[x^3/(16+8)]-2
It says the quotient, dividing, of 'a number', which means a variable or unknown number, cubed, which means to the 3rd power, and 16 increased by 8 (which is 16+ 8) and at the beginning it says 2 less than which means -2.
To find the volume we use an equation:
volume = length x width x height
Since this shape is a cube, you only need to know one side to find the volume since all of the sides are equal.
So all you need to find the volume is to multiply 4(1/2) which I am going to simplify to 4.5, is plug it into the equation.
volume = 4.5 x 4.5 x 4.5
Which will get you an answer of 91.125 inches cubed

Hope this helps :)
The sign is negative because a negative times a positive is a negative. Anytime the signs are different the answer is always negative.