PLEASE HELP ME PLS PLS PLS PLS THIS IS MY LAST PROBLEM!!! WILL GIVE BRAINLIEST

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Is there an x intercept in the equation 60*1.15^x

Atype of plant is introduced into an ecosystem and quickly begins to take over. a scientist counts the number of plants after mmonths and develops the equation p(m)= 19.3(1.089)^m to model the situation. most recently, the scientist counted 138 plants.assuming there are no limiting factors to the growth of the plants, about how many months have passed since the plants werefirst introduced? a)o 6.1b)0.6.6c)10 72d)o 23.1