Simplify the expression using order of operations.1220 ÷ 5[12 + (8 - 1)2] - (-9)2
A. 
B. 
C. 85
D. -77
Answer: D
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Solve the problem.A spring is depressed from its equilibrium position such that its equation of motion is 
where y is the displacement, and 
What must be the value of b if the motion is critically damped?
A. 3 B. 6 C. -6 D. -3
Graph the feasible region for the system of inequalities.2x + y ? 4 x - 1 ? 0
A. 
B. 
C. 
D. 
Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.(-4p-4q)(4p-6q-5)
A. 
B. 
C. - 
D. - 
The demand equation for a certain brand of GPS Navigator is x + 5p - 425 = 0, where x is the quantity demanded per week and p is the wholesale unit price in dollars. The supply equation is x - 17p + 1,005 = 0, where x is the quantity the supplier will make available in the market when the wholesale price is p dollars each. Find the equilibrium quantity and the equilibrium price for the GPS Navigators.
a. equilibrium quantity 100 units; equilibrium price $65 b. equilibrium quantity –10 units; equilibrium price $70 c. equilibrium quantity –10 units; equilibrium price $65 d. equilibrium quantity 100 units; equilibrium price $70