In Haskell programming language (1) Write a "averageThree" function to return the average of three integers. averageThree :: Integer -> Integer -> Integer -> Float

(2) Write a "howManyAboveAverage" function which returns how many of three integer inputs are above its average value. (utilize the averageThree function.) howManyAboveAverage :: Integer -> Integer -> Integer -> Integer

(3) Write a "howManyWithinThreshold" function that returns how many of the first three arguments are within the threshold (the fourth argument) of the average of the first three arguments. (utilize the averageThree function and the logic in the howManyAboveAverage function.) howManyWithinThreshold :: Integer -> Integer -> Integer -> Float -> Integer

I personally have completed (1) and (2)!

[sample of (1)] averageThree :: Integer -> Integer -> Integer -> Float averageThree a b c = (fromIntegral (a + b + c)) / 3

All i need help with is 3, where i am stuck and can not resolve!