Answer:
x= 90-60
x=30
Step-by-step explanation:
Answer:
(n)*(x+y)(x-y)
Step-by-step explanation:
First of all, you take the n out, and then you use the formula of x²- y² and it will equal to (x+y)(x-y).
The answer would be letter B. You can see that the price of the demanded products as the time passes by decreases. So the answer is letter B.
