Answer:
Perfectly inelastic
Explanation:
A demand is perfectly inelastic when quantity demanded does not change in response to a change in price.
You have not suggested a list considering your question asks "..following businesses..."
Answer:
(a) 
(b) profit = 95,683.33
Explanation:

C(x) = 5900 + 130 x
(a) Revenue, R(x) = Price × Quantity


(b) profit = R(x) - C(x)

At x = 1150

= 471,500 - 220,416.67 - 5,900 - 149,500
= 95,683.33