Find the domain of the function.f(x) = x2 + 2
A. {x|x ? -2}
B. {x|x > -2}
C. all real numbers
D. {x|x ? -2}
Answer: C
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Find the length of the curve.The spiral r = 5?2, 0 ? ? ? 2
A. 720
B. 80?5
C. 
((?2 + 1)3/2 - 1)
D. 
Determine whether the inequality is a true statement.- 2 ? - 18
A. True B. False
Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.x2 + 9x - 22
A. (x - 11)(x + 2) B. prime C. (x - 11)(x + 1) D. (x + 11)(x - 2)
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