(Answered) How would each of the following affect the firm’s marginal cost (MC), average variable cost (AVC),…

How would each of the following affect the firm’s marginal cost (MC), average variable cost (AVC), and average total cost (ATC) curves?
1. A decrease in material costs.
decrease MC, no change AVC, decrease, ATC
decrease MC, decrease AVC, decrease, ATC
increase MC, increase AVC, increase, ATC
no change MC, no change AVC, decreases ATC
no change MC, no change AVC, increases ATC
increase MC, no change AVC, increase, ATC
2. An increase in wages.
decrease MC, no change AVC, decrease, ATC
decrease MC, decrease AVC, decrease, ATC
increase MC, increase AVC, increase, ATC
no change MC, no change AVC, decreases ATC
no change MC, no change AVC, increases ATC
increase MC, no change AVC, increase, ATC
3. The rent that the firm pays on the building that it leases decreases.
decrease MC, no change AVC, decrease, ATC
decrease MC, decrease AVC, decrease, ATC
increase MC, increase AVC, increase, ATC
no change MC, no change AVC, decreases ATC
no change MC, no change AVC, increases ATC
increase MC, no change AVC, increase, ATC
4. The government imposes a fixed amount of tax.
decrease MC, no change AVC, decrease, ATC
decrease MC, decrease AVC, decrease, ATC
increase MC, increase AVC, increase, ATC
no change MC, no change AVC, decreases ATC
no change MC, no change AVC, increases ATC
increase MC, no change AVC, increase, ATC