Find the inverse of the function.f(x) = x3 + 8
A. f-1(x) = 
B. f-1(x) = 
- 8
C. f-1(x) = 
D. Not a one-to-one function
Answer: A
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Solve the problem.A rectangular horse pen is to be fenced and divided into five partitions as shown. The length of the fenced-in area is to be twice the width, and the total amount of fencing to be used is 390 feet. Find the length and width of the fenced-in area.
A. l = 41 ft, w = 39 ft B. l = 27.9 ft, w = 14 ft C. l = 78 ft, w = 39 ft D. l = 86.7 ft, w = 43.3 ft
Solve the system by either elimination or substitution. Verify your work by using "intersect" on your graphing calculator of by checking that your result satisfies both equations of the system.
A. all points on the line 2x + 3y = 16; dependent system B. empty set solution; inconsistent system C. (-3.2, 12.8) D. (12.8, -3.2)
Factor the polynomial using the negative of the greatest common factor.-3x4 - 15x3 + 27x2
A. -3x2(x2 + 5x - 9) B. -3x(x3 + 5x2 - 9x) C. -3x2(x2 - 5x + 9) D. 3x2(-x2 - 5x + 9)
Simplify by combining like terms.5x - 4x + 3x - x - 8x
A. -4x B. -6 C. -5x D. 6