Question 1169780
.
The revenue of Aling Tura's bakery in selling bread is determined by the formula,R = 40-x² 
where x is the number of bread sold. The cost for producing those breads is given by a formula C=x+50. 
Using quadratic inequality, represent the positive or normal profit of Aling Tura. 

Profit=Revenue-Cost
~~~~~~~~~~~~~~



According to your formula, the revenue is monotonically decreasing function of the number of sold items.



It is rarely one can find such a gibberish presented in a written form.



I personally see such gibberish for the second time in my life . . .