Find a formula for the inverse of the function described below.A size 12 dress in Country C is size 40 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = 
+ 8
B. f-1(x) = 
C. f-1(x) = 
- 8
D. f-1(x) = x - 8
Answer: C
Mathematics
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Solve the system of linear equations using matrices.
A. 
3x - 8y + 7z = 14}
B. (2, 2, -1)
C. ?
D. (-1, -9, -5)
Mathematics
Graph the pair of functions on the same plane. Use a dashed line for g(x).f(x) = x2 , g(x) = - 
(x + 4)2 + 3
A. 
B. 
C. 
D. 
Mathematics
Write interval notation for the graph.
A. [-6, -2) B. (-6, -2] C. (2, 6] D. [2, 6)
Mathematics
Solve the problem.Elissa wants to set up a rectangular dog run in her backyard. She has 22 feet of fencing to work with and wants to use it all. If the dog run is to be x feet long, express the area of the dog run as a function of x.
A. A(x) = 11x - x2 B. A(x) = 12x - x2 C. A(x) = 10x - x2 D. A(x) = 13x2 - x
Mathematics