14 16 & 22 Only

14. V + 3x 16. y 8V X 18. V 0.9 20. y = -4/5 22.Find\f- Healing wound. The circular area EL in square centime- ters. of a healing weund is approximated by an} = 3.149, where r is the wound's radius, in centimeters. it) Find the rate of change of the area with respect to the radius. In Find 1113). \\ e) Explain the meaning at your answer ta part {b}. .. 38. Temperature during an lneel. The temperature T of a person during an illness is given by T[t} = vz:t1r1 + 1.2: + 93.5, where T is the temperature, in degrees Fahren heit, at time t, in tiays. all Find the rate of change of the temperature with respect to time. h] Find the temperature att = 1.5 days. :1 Find the rate a! change at t = 1.5 days. 90. Bland flew resistance. The equation 5 r = i 1 r4, can be used to determine the resistance to blood flow, 5, of a blood vessel that has radius r, in millimeters {mm}. (Source: Mathematics Teacher, Vol. 99, Na. 4, November l'i} 'L I'! '-i V Resistance in Hand ow 1 2 3 JII r Radius ei bleed vessel lKin millimeters) a) Find the rate of change of resistance with respect te r, the radius of the blood vessel. I!) Find the resistance at r = 1.2 mm. c] Find the rate of change of S with respect to r when r = [13 mm