The volume V of a cone that has height equal to its radius r is given by V (r) = } m3. Find the inverse of V (r), expressing r as a function of V. 33. Find the inverse of y = e22–3 41. The decibel level for the intensity of a sound is a logarithmic scale defined by D = 10log101 + 120, where I is the intensity of the sound in watts per square meter. a. Express I as a function of D. b. Show that when D increases by 20, the intensity increases by a factor of 100.
