Solve the problem.Find the sum of the infinite series 1 + 4r + r2 + 4r3 + r4 + 4r5 + r6 + ... for those values of r for which it converges.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Simplify.
A. 
B. 
C. 
D. 
Mathematics
The graph of the equation is a parabola. Determine whether the parabola opens upward, downward, to the left, or to the right. Do not graph.y = 3x2 - 4x - 2
A. downward B. to the right C. to the left D. upward
Mathematics
Solve the right triangle using the information given. Round answers to two decimal places, if necessary.
a = 3, c = 8; Find b, ?, and ?.
A. b = 7.42 ? = 22.02° ? = 67.98° B. b = 8.54 ? = 23.02° ? = 66.98° C. b = 7.42 ? = 67.98° ? = 22.02° D. b = 8.54 ? = 22.02° ? = 67.98°
Mathematics
Solve.(x - 7)(x + 1) ? 0
A. (7, ?) B. (-?, -7] ? [1, ?) C. (7, -1) D. (-?, -1] ? [7, ?)
Mathematics