An isocost line shows:
a. all the possible output levels that can be produced at a given total cost.
b. all the input combinations that produce the same total output.
c. all the input combinations that can be purchased at a given total cost.
d. the total cost of producing each possible level of output.

C) all the input combinations that can be purchased at a given total cost.

Explanation:

The isocost formula is C =wL + rK  

where:

The isocost line shows the different combinations of inputs that can be purchased for a given level of total expenditure (C) at given input prices (w, r).

The total costs should be minimized at the point where the isocost line intersects with the isoquant line (shows all possible input combinations capable of producing a given level of output).

c.

explanation:

regressive tax taxes the poor and less of the wealthy. this the rich get richer and the poor get more poor. this would create a large wealth gap.

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.