Write the equation in standard form for an ellipse or a hyperbola centered at (h, k).6x2 + 4y2 + 16y - 8 = 0
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
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Factor.z6 + 1
A. (z + 1)(z - 1)(z4 - z2 + 1) B. (z + 1)(z - 1)(z2 + z + 1)(z2 - z + 1) C. (z3 + 1)(z3 - 1) D. (z2 + 1)(z4 - z2 + 1)
Find either a linear or an exponential function that models the data in the table.
A. f(x) = 3(0.5)x B. f(x) = 3(2.5)x C. f(x) = -0.5x + 3 D. f(x) = 0.5x + 3
Identify intervals on which the function is increasing, decreasing, or constant.f(x) = x3 - x2 + 2
A. Increasing: (-?, 0) and (0.67, ?); constant: (0, 0.67) B. Increasing: (-?, 0) and (0.67, ?); decreasing: (0, 0.67) C. Increasing: (-?, -2) and (2, ?); decreasing: (-2, 2) D. Increasing: (0, 0.67); decreasing: (-?, 0) and (0.67, ?)
Solve the problem. Round your answer to the nearest tenth.Find the work done by a force of 200 pounds acting in the direction 
in moving an object 75 feet from (0, 0) to (-75, 0).
A. 6708.2 ft-lb B. 8944.9 ft-lb C. 15,000.0 ft-lb D. 13,416.1 ft-lb