The area of a rectangular swimming pool is 10x^2 - 19x - 15. The length of the pool is 5x + 3. What is the width of the pool?
A. 2x-18
B. 2x - 5
C. 5x - 5
D. 5x - 22
Let's start by factoring the area of the rectangular swimming pool:
10x^2 - 19x - 15 = (5x + 3)(2x - 5)
The width of the pool is the remaining factor after dividing by the length, so:
Width = 2x - 5
Therefore, the width of the pool is B. 2x - 5