Solve the problem.A size 8 dress in Country C is size 48 in Country D. A function that converts dress sizes in Country C to those in Country D is 
Find a formula for the inverse of this function.
A. f-1(x) = 
+ 16
B. f-1(x) = x - 16
C. f-1(x) = 
- 16
D. f-1(x) = 
Answer: C
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Answer the question.The graph below shows the level curves of a differentiable function f(x, y) (thin curves) as well as the constraint g(x, y) = 
- 
= 0 (thick circle). Using the concepts of the orthogonal gradient theorem and the method of Lagrange multipliers, estimate the coordinates corresponding to the constrained extrema of f(x,y).
A. (1.5, 0.2), (0.7, 1.3), (-1.5, 0.2), (-0.7, 1.3), (-1.5, -0.2), (-0.7, -1.3), (1.5, -0.2), (0.7, -1.3) B. (1.1, 1.1), (-1.1, 1.1), (-1.1,-1.1), (1.1,-1.1) C. (1.5, 0), (0, 1.5), (-1.5, 0), (0, -1.5) D. (1.3, 0.7), (-1.3, 0.7), (-1.3,-0.7), (1.3,-0.7)
Find the derivative of the function.y = log8
A. 
B. 
C. 
D. 
Solve.log5 (x2) = 4
A. 625
B. 25, -25
C. 2
, -2
D. 32
Simplify.
2 + 3 ? 1
÷ 18
A. 
B. 1
C. 1
D. 1