Factor completely using the grouping method to factor trinomials. If unfactorable, indicate that the polynomial is prime.3x2 - 10x - 8
A. prime
B. (3x - 4)(x + 2)
C. (3x - 2)(x + 4)
D. (3x + 2)(x - 4)
Answer: D
Mathematics
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Solve the problem. Round results to an appropriate number of significant digits.When sitting atop a tree and looking down at his pal Joey, the angle of depression of Mack's line of sight is 
If Joey is known to be standing 26 ft from the base of the tree, how tall is the tree?
A. 38 ft B. 40 ft C. 42 ft D. 36 ft
Mathematics
Find the inverse of the function.f(x) = 7x3 + 6
A. f-1(x) = 
B. f-1(x) = 
- 6
C. Not a one-to-one function
D. f-1(x) = 
Mathematics
Find the focus and directrix of the parabola.x2 + 16y = 0
A. F: (0, -4); D: x = 4 B. F: (0, -4); D: y = -4 C. F: (0, -4); D: y = 4 D. F: (-4, 0); D: y = 4
Mathematics
Determine the limit algebraically, if possible.
A. 
B. Does not exist
C. 0
D. 1
Mathematics