Solve.The population of an endangered species living in a controlled habitat is given by the equation
where P is the population and t is the time in months since the population was moved to the habitat. Graph the equation for t = 0, 6, 12, and 18.
A. 
B. 
C. 
D. 
Answer: C
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Evaluate the integral by changing the order of integration in an appropriate way.
A. 2 sin 2 B. 2(1 - cos 2) C. 2(1 + sin 2) D. 2 cos 2
Ohm's Law for the current I in a circuit with voltage E, resistance R, capacitance reactance XC, and inductive reactance XLis 
Use this law to solve the problem.Find XCif I = 6 - 2i, E = 5 - 5i, R = 9, and 
A. - 
+ 8i
B. 
- 8i
C. - 
- 8i
D. 
+ 8i
Fill in the blank with one of the words or phrases listed below.
Terms that are exactly the same, except that they may have different numerical coefficients, are called 
terms.
A. combined B. simplified C. like D. variable
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.8w + 7x - 6y - 4z = 117w + 5x - 9y - 4z = -108w - 7x + 7y + 5z = -25-6w - 4x + 7y + 8z = -2
A. (1, 5, 4, 2) B. (-1, 5, 4, -2) C. (-1, 4, -5, 2) D. No solution