A rectangle has a perimeter of 42 feet. Its length, L, is three feet more than twic (a) Create an equation in terms of L and W for the perimeter of the rectangle. W b) Create an equation that relates L and W based on the length being three feet more than twice the width. Solve the system of equations that you just created by substitution to width.​

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