Solve the system by the addition method.x2 + y2 = 44x2 + 16y2 = 64
A. {(0, 4), (0, -4)}
B. {(4, 0), (-4, 0)}
C. {(0, 2), (0, -2)}
D. {(2, 0), (-2, 0)}
Answer: C
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Solve.Find the minimum value of the function y = tan-1(3x - 1) - tan-1(3x + 1).
A. 0
B. - 
C. -2
D. - 
Solve the problem.The following is a real estate commission on the selling price of a house. 6% for the first $100,000, and 3% for the amount which exceeds $100,000A realtor receives $11,370 for selling a house. What was the selling price?
A. $5370 B. $379,000 C. $279,000 D. $179,000
Write a formula for the general term (the nth term) of the sequence. Then use the formula for an to find the twelfth term of the sequence.3, 12, 21, 30, . . .
A. an = 6n - 2; a12 = 70 B. an = 6n - 9; a12 = 63 C. an = 9n - 6; a12 = 102 D. an = 9n - 2; a12 = 106
Write the number as a fraction. Do not simplify.0.00228
A. 
B. 
C. 
D. 