Find the circumference of a circle whose area is 24pi ft^2

Let r = 3. what is the value of r + 58?

Nine more than four times a number is the same as one less than twice the number. find the number?

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