Please assist : Greg's Hardware has determined the following demand and supply equations for nails QD = 10,000-25P QS = -5,000 + 50P a. How many

Please assist :

Greg’s Hardware has determined the following demand and supply equations for nails

QD = 10,000-25P

QS = -5,000 + 50P

a. How many nails would be sold for $100?

b. At what price would nail sales be zero?

c. When P = $200, what is total revenue? What is marginal revenue?

d. What is the relationship between quantity supplied and quantity demanded at a price of$300?