Determine the real solutions to the system of nonlinear equations.y = x2 - 6x + 4y = -x2 + 2x + 14
A. (5, -1), (-1, 11)
B. (5, -1), (0, 4)
C. (-5, 59), (0, 4)
D. (-5, 59), (1, -1)
Answer: A
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Verify the identity.
= cos 2x
What will be an ideal response?
Solve the equation. Express irrational answers in exact form and as a decimal rounded to 3 decimal places.
x = 91 - x
A. 
? 1.386
B. ln 
- ln 9 ? -1.350
C. 
? 1.257
D. 
? 0.722
Solve the problem.A stone is thrown into a pond. A circular ripple is spreading over the pond in such a way that the radius is increasing at the rate of 6.3 feet per second. Find a function, r(t), for the radius in terms of t. Find a function, A(r), for the area of the ripple in terms of r. 
A. (A ? r)(t) = 6.3?t2 B. (A ? r)(t) = 12.6?t2 C. (A ? r)(t) = 39.69?2t D. (A ? r)(t) = 39.69?t2
Solve.The house numbers on the same side of Eliza Street are consecutive even integers. If the Johnson, Randall, and Orlowski families live in three consecutive houses and the sum of their house numbers is1320, find the house numbers.
A. 219, 221, 223 B. 438, 440, 442 C. 442, 444, 446 D. 439, 440, 441