Save me. i have no idea what i'm doing.

The correct answer would be 21 feet, as the image shown is an equilateral triangle. Thus, finding the perimeter we add up all sides and get the answer of 21 feet, which is less than 28 feet as needed.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0