Okay, so you know that something minus 20% of its total will equal 75%. You can set up an equation:
X - 0.2X = 75
0.8X = 75
X = 93.75 ,
meaning that the original price was $93.75
For this case we have the following equations:

We must find 
By definition of composition of functions we have to:

So:

We must find the domain of f (g (x)). The domain will be given by the values for which the function is defined. That is to say:

Then, the domain is given by [3, ∞)
Answer:
The smallest number that is the domain of the composite function is 3
Step-by-step explanation:
odd or factor of 100 is only 5
so answer is 33.3%
Answer:
29622 m^2
Step-by-step explanation:
SA = 2 ( lw+ wh+ lh) where l = length w = width h = height
SA = 2 ( 81*75+ 75* 56+ 81*56)
= 2 (6075+4200+4536)
= 2(14811)
29622