How can factors help you find common denominator​

Solve the equation x/4 - 5= -8 -27 -12 -7 12

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

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?