Solve the problem.The figure shown here shows a rectangle inscribed in an isosceles right triangle whose hypotenuse is 8 units long. Express the area A of the rectangle in terms of x.
A. A(x) = 2x(x - 4)
B. A(x) = 2x2
C. A(x) = 2x(4 - x)
D. A(x) = x(4 - x)
Answer: C
Mathematics
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Solve the problem.Does the graph of the function y = 6x + 3 sin x have any horizontal tangents in the interval 
If so, where?
A. Yes, at x = 
, x = 
B. Yes, at x = 
C. Yes, at x = 
, x = 
D. No
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Multiply and write answer in lowest terms.1
× 
A. 2
B. 
C. 1
D. 
Mathematics
Use the counting principle to obtain the answer.At a lumber company that sold shelves, a customer could choose from 3 types of wood, 4 different widths and 5 different lengths. How many different types of shelves could be ordered?
A. 35 B. 36 C. 60 D. 12
Mathematics
Solve the problem.Find the centroid of the region cut from the fourth quadrant by the circle x2 + y2 = 25.
A. 
= 
, 
= - 
B. 
= 
, 
= - 
C. 
= - 
, 
= 
D. 
= 
, 
= - 
Mathematics