Let f be defined as follows. y = f(x) = x

Let f be defined as follows. y f(x) = x2 2x Find the average rate of change of y with respect to x in the following intervals. (a) (b) from x from x from x 2 to x 2 to x 2 to x 2.5 2.1 Find the (instantaneous) rate of change of y at x 2. A hot-air balloon rises vertically from the ground so that its height after t s is given by the following function. (a) (b) (c) h = _t2 + _tft where (O S t S 60) What is the height (in ft) of the balloon at the end of 33 sec? ft What is the average velocity (in ft/sec) of the balloon between t X ft,'sec What is the velocity at time t? v(t) = O and t