An ice sculpture in the form of a sphere melts in such a way that it maintains its spherical shape. the volume of the sphere is decreasing at a constant rate of 2pi cubic meters per hour. at what rate, in square meters per hour, is the surface area of the sphere decreasing at the moment when the radius is 5 meters? (note: for a sphere of radius r, the surface area is 4πr^2 and the volume is 4/3πr^3) (a) 4pi/5 (b) 40pi (c) 80pi^2 (d) 100pi

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?