Determine whether the equation defines y as a function of x. y = |x|
A. function
B. not a function
Answer: A
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Solve the problem.A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only one-fifth as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thickness of the frame.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = - t3 + 2t2 - 2t, 0 ? t ? 2Find the body's speed and acceleration at the end of the time interval.
A. 6 m/sec, -8 m/sec2 B. -6 m/sec, -8 m/sec2 C. 2 m/sec, 0 m/sec2 D. 6 m/sec, -2 m/sec2
Let triangle ABC have standard labeling. Given the following angles and sides, decide if solving the triangle results in the ambiguous case.?, a, and c
A. Yes B. No
A building in the shape of a rectangular box is to have a volume of 
(see the figure). It is estimated that the annual heating and cooling costs will be $2/square foot for the top, $4/square foot for the front and back, and $2/square foot for the sides. Find the dimensions of the building that will result in a minimal annual heating and cooling cost. What is the minimal annual heating and cooling cost(C)?
?
?
A. 
B. ?
C. ?
D. ?