A mountain peak is 12,200 feet above sea level. The valley below is 218 feet below sea level. How far is it from the peak to the
valley?
what is the answer

How do you solve a question like this?

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

Find the value of x to the nearest tenth.