Since the problem states "a number" and again "a number", I assume it;'s the same number. Let the number be x.
12x - 9x = 3x
The difference of twelve times a number and nine times a number is three times the number.
Hii I believe your option would be D. I hope it helps :)
At θ = 90°, the equation must evaluate to zero. The only one that does that is the 1st choice ...
r = 2 - 2sin(θ)
The ordered pair that represents a maximum is (5,189)
Answer:
The price after the discount would be $315.