The height, h, in meters of an object launched straight up after t seconds can be represented by h(t) : 74.9712 + 2975. What is the instantaneous velocity of the object three seconds after it is launched? Velocity: ' ' m/s Find the x-values where f(ac) - 3ac + 4ac - 7ac + 6 has a horizontal tangent line. Add WorkThe population of a slowly growing bacterial colony after t hours is given by p(t) : 5252 + 2675 + 200. Find the growth rate (that is, the instantaneous rate of change of the population) after 4 hours. bacteria/hour