In which case do you need to reverse the inequality sign when solving an inequality?
a. when there is no line under the inequality symbol
b. when adding or subtracting a negative number
c. when multiplying or dividing a negative number
d. when there is a line under the inequality symbol

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