Perform the indicated clock arithmetic.9 ? 1 (12-hr clock)
A. Undefined
B. 21
C. 9
D. 12
Answer: C
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Solve.The pitch of a screw is the distance between threads. With each complete rotation of the screw, it goes in or out a distance equal to its pitch. How far will a screw with a pitch of 
in. go into a piece of wood when it is turned 10 complete rotations clockwise?
A. 
in.
B. 
in.
C. 
in.
D. 
in.
The hyperbola shown in the calculator-generated graph was graphed in function mode with a square viewing window. What are the two functions y1 and y2 that were used to obtain the graph whose equation is given?
10
-10
A. y1 = 6
, y2 = -6
B. y1 = 6
, y2 = -6
C. y1 = 5
, y2 = -5
D. y1 = 6
, y2 = -6
Solve the equation after making an appropriate substitution.x1/2 - 9x1/4 + 18 = 0
A. {81, 1296} B. {3, 6} C. {9, 36} D. {-3, -6}
Solve the problem.For what numbers x, -2? ? x ? 2?, does the graph of y = cot x have vertical asymptotes?
A. -2?, -?, 0, ?, 2?
B. -2, -1, 0, 1, 2
C. - 
, - 
, 
, 
D. none