Find the equation of the parabola corresponding to the given information.The parabola has focus and directrix as shown.
A. y = x2
B. x = 
y2
C. x = - 
y2
D. x = - y2
Answer: B
Mathematics
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Is the function graphed one-to-one?
A. Yes B. No
Mathematics
Solve the equation by completing the square.(x + 2)(x - 1) = -4
A. x = -3 or x = 2
B. no real solution
C. x = -2 or x = 3
D. x = -3 - 
or x = -3 + 
Mathematics
Use a graphing utility to find the sum of the geometric sequence. Round answer to two decimal places, if necessary.
A. 264 B. 2728 C. 40 D. 5140
Mathematics
Provide an appropriate response.If f(x) = 2x2 - x - 3 and g(x) = -4x2 + 6x + 5, find the following:(a) (f + g)(x)
(b) (f - g)(x)
(c) (f - g) (-1)
A. (a) -2x2 + 5x + 2 (b) 6x2 - 7x - 8 (c) 5 B. (a) -2x2 + 5x + 2 (b) -2x2 - 5x - 8 (c) 5 C. (a) -2x2 + 7x + 2 (b) -2x2 - 7x - 8 (c) 15 D. (a) -2x2 + 5x + 2 (b) 6x2 - 5x - 8 (c) 15
Mathematics