Solve the problem.Find the consumers' surplus if the demand function for an item is given by D(q) = 30 - q2, assuming supply and demand are in equilibrium at q = 4.
A. 64
B. 
C. 128
D. 
Answer: B
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Simplify the following expression.
?
?
A. ?4y2 B. 9y2 C. 96y2 D. 6y2 E. 24y2
Choose the terminology that best classifies the given figure.
A. Simple concave curve B. Simple closed convex curve C. Polygon D. Concave polygon
Solve the problem.Assume that the price per unit d of a certain item to the consumer is given by the equation 
where x is the number of units in demand. The price per unit from the supplier is given by the equation 
where x is the number of units supplied. Find the equilibrium price and the equilibrium quantity.
A. equilibrium price: $35 per unit; equilibrium quantity: 50 units B. equilibrium price: $50 per unit; equilibrium quantity: 30 units C. equilibrium price: $20 per unit; equilibrium quantity: 50 units D. equilibrium price: $30 per unit; equilibrium quantity: 50 units
Find the equation of the graphed line.
A. y = - x + 6 B. y = x + 6 C. y = x - 6 D. y = - x - 6