Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. -2460
B. 244
C. -156
D. -7710
Answer: A
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Simplify the power of i.i92
A. i B. 1 C. -i D. -1
Determine any local or absolute extrema as indicated.Estimate graphically the local extrema of f(x) = 
.
A. Local maximum: 0.5; local minimum: -0.5 B. Local maxima: 0, 0.5; local minima: -0.5, 0 C. Local maximum: 0; local minimum: 0 D. Local maximum: 2; local minimum: -2
Solve using the quadratic formula. Use a calculator to approximate the solutions to the nearest thousandth.7x2 + 4x = 5
A. -1.178, 0.606 B. -2.002, 1.031 C. -18.822, 9.691 D. -9.423, 4.851
Determine the real solutions to the system of nonlinear equations.x2 + y2 = 53(x - 1)2 + y2 = 40
A. (7, 2), (7, -2) B. (7, 2), (7, -2), (-7, 2), (-7, -2) C. (2, 7), (2, -7), (-2, 7), (-2, -7) D. (2, 7), (2, -7)