Answer:
a
Step-by-step explanation:
sum always means only addition :D mark brainliest if right
Well flat means open so 180°
180° - 50° = 130° is the answer

Explanation:
Since we have given that
The prices of three t-shirts styles i.e $24, $30, $36 with their probability is given by

As we know that,


Now,

and

So,

So, the expected value of a t-shirt = $31.
Answer:
hope it is helpful to you