The answer is "no one is completely self-sufficient".
Being self sufficient means that one is able to supply one's own or its own needs without external assistance which in an individual case is impossible, everyone needs to rely for some service or something on others, and other people rely on someone too for a specific service this is how a society works.
Answer:
(D) because you cannot sell shells.
Answer:
Inelastic
Explanation:
When the price of hamburgers increased from $1.50 to $2.75, the quantity demanded decreased from 375 units sold to 250 units sold. Using the midpoint method, hamburgers are said to be inelastic
1. Change in price = 2.75-1.5 / (1.5+2.75)/2 = 1.25/2.125 = 0.59
2. Change in quantity demanded = 375-250 / (375+250)/2 = 125/ 312.5 = 0.4
3. Price Elasticity = 0.4/0.59 = 0.68
4. When the value of elasticity is less than 1, it suggests that the demand is insensitive to price and is inelastic
