Reginald wants to buy a new collar for each of his 2 dogs. The collars come in a choice of 7 different colors. Step 2 of 2 : How many selections of collars are possible if repetitions of colors are not allowed?

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