Chris P Bacon

A forest fire leaves behind an area of grass burned in an expanding circular pattern. The radius of the circle of burning grass is increasing with time according to the formula r(t)= 1t+5. What function expresses the area burned as a function of time t in...

The radius r, in inches, of a spherical balloon is related to the volume V by r(V)= cubed√3V/4pi Air is pumped into the balloon so the volume after t seconds is given by V(t)=12+20t. a. Find the expression for the composite function r(V(t)). b. What is th...