Answer:
6x¹⁰ - 96x²
6x²(x⁸ - 16)
B) 6x²(x⁸ - 16)
6x²[(x⁴)² - 4²]
6x²[(x⁴ - 4)(x⁴ + 4)]
6x²(x⁴ + 4)[(x²)² - 2²]
6x²(x⁴ + 4)(x² - 2)(x² + 2)
All you have to do is to determine the # of degrees covered in 1 hour. Divide "15 deg in 2 hrs" by 2; you'll get
(15/2) deg / 1 hr