115.9 rounded to the nearest hundred

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)