Answer:
In general, an expression is in simplest form when it is easiest to use.
Step-by-step explanation:
Answer:
A) 
B) 
C) 
Step-by-step explanation:
So we have the equation:

Let's write this in function notation. Thus:

A)
To flip a function over the x-axis, multiply the function by -1. Thus:

Simplify:

B) To flip a function over the y-axis, change the variable x to -x. Thus:

Simplify:

C) A reflection over the line y=x is synonymous with finding the inverse of the function.
To find the inverse, switch x and f(x) and solve for f(x):

Switch:

Subtract 4 from both sides:

Divide both sides by 5:

And we're done :)
0.09 is the answer, hope this helps
This is just stuff you have to memorize, I can’t really explain much further than product always means multiplication. The “product of” means k*m