Please help! I don't understand how to do this.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

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

The area of a circle is equal to 1 dm². find the radius of the circle.