price-taking firm

Explain whether each of the following actions would affect the firm’s profit-maximizing decision. (Hint: How would each affect MRand MC?)
a. An increase in the cost of a variable input such as labor.
b. A decline in the output price for a price-taking firm.
c. Institution of a small fixed fee to be paid to the government for the right of doing business.
d. Institution of a 50 percent tax on the firm’s economic profits.
e. Institution of a per-unit tax on each unit the firm produces.
f. Receipt of a no-strings-attached grant from the government.
g. Receipt of a subsidy per unit of output from the government.
Receipt of a subsidy per worker hired from the government