Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 + 
x - 
= 0
A. -1
B. 0.75
C. -1.25, 0.75
D. -0.781, 1.281
Answer: D
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Identify the type of surface represented by the given equation.
+ 
- 
= 1
A. Elliptical cone B. Hyperboloid of one sheet C. Hyperboloid of two sheets D. Ellipsoid
Write a system of inequalities that describes the possible solutions to the problem.Andy decides to fence off a rectangular piece of his land to use as a vegetable garden. He has 80 feet of fencing so the perimeter of the fenced in area cannot exceed 80 feet. The length of the garden is to be at least 4 feet longer than the width. The width must be at least 6 feet. Write a system of inequalities that describe this situation. Let w represent the width and l represent the length.
A. l + w ? 80 l ? w + 4 w ? 6 B. 2l + 2w ? 80 l ? w + 4 w ? 6 C. l + w ? 80 w ? l + 4 l ? 6 D. 2l + 2w ? 80 w ? l + 4 l ? 6
LetU = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}Determine the following. (B' ? C)' ? A
A. {q, r, s, t, u, w, y, z} B. {q, s, u, v, w, x, y} C. {q, r, s, t, u, v, w, x, y} D. {q, s, u, y}
Identify the points in the graph for the ordered pairs. 
(-3, 4), (2, 0), (4, -5)
A. A, B, and F B. B, F, and L C. B, C, and L D. F, K, and L