Determine the upper and lower bounds on the zeros of the given function.g(x) = 5x4 - 9x2 + 3
A. upper bound: 2; lower bound: -2
B. upper bound: 1; lower bound: -1
C. upper bound: 2; lower bound: -1
D. upper bound: 1; lower bound: -2
Answer: A
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Find the center and radius of the sphere.(x + 2)2 + (y + 9)2 + (z + 8)2 = 
A. C(2, 9, 8), a = 
B. C(2, 9, 8), a = 
C. C(-2, -9, -8), a = 
D. C(-2, -9, -8), a = 
Which of the following is not true? ?
A. ?A Straight angle has a measure of 180?. B. ?Complementary angles have measures that add up to 180?. C. ?Supplementary angles have measures that add up to 90?. D. ?Complementary angles have measures that add up to 90?. E. ?ARight angle is 90?.
Solve the problem.The intensity L(x) of light x ft beneath the surface of a lake satisfies the differential equation 
. At what depth, to the nearest foot, is the intensity one tenth the intensity at the surface?
A. 16 ft B. 49 ft C. 22 ft D. 33 ft
Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.8 + 2x2 = 4x
A. one rational solution B. two rational solutions C. two irrational solutions D. two nonreal complex solutions