4. At a certain instant of time, a cube has a side length of 2 inches and its volume is increasing at a rate of 0.5 inches cubed per hour. How fast is its surface area increasing at that instant? x+y2 x3y 5. Let += model the path of a particle. If the x-coordinate is decreasing at a rate of 6 units per second when the particle is at the point (1,2), what is the rate of change of the y-coordinate at that moment? Is the particle rising or falling then? M daiv Janda sitaque a no show Ila worl celo od blode To jest be wanA