What is the answer for -3y+12=-48-3y+12=-48

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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

Use long division to indentify (12xto the second power+15x-8)divided by 3x