Answer:

Step-by-step explanation:
We are given the following in the question:
x: −4 −3 −2 −1 0
P(X=x): 0.2 0.3 0.1 0.2 0.2
We have to evaluate

Since it is a discrete probability distribution as

We can evaluate the probability as:

Thus, 0.4 is the require probability.
I believe that it is 2x^2+1x-2
I don't know if you are asking for an equation but if you are, here ya go.
P = $3.95 + $0.85t
B because the table shows of stories and height