Answer:
5
Step-by-step explanation:
1. To Get the answer one you must first do you one fourth times X one X equals four 1/4×4 equals one
2.One to the second power equals one because 1×1 = 1
3. Lastly add 1 to 4 to get the answer five
640 minus 400 equals 240 being the profit, if that's what you were asking
Derivatives galore. Don't forget you might need to split the function because of the absolute value.