Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q.
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Answer: B
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 8 sin t - cos tFind the body's velocity at time t = ?/4 sec.
A. 
m/sec
B. 
m/sec
C. - 
m/sec
D. - 
m/sec
Find the indicated series by the given operation.Find the first four nonzero terms of the expansion of the function 
by adding the terms of the appropriate series. The result is the series for cosh x.
A. x + 
x2 + 
x3 + 
x5 + . . .
B. 1 + 
x2 + 
x4 + 
x6 + . . .
C. x + 
x2 + 
x4 + 
x6 + . . .
D. 1 + 
x2 + 
x3 + 
x4 + . . .
Determine whether the pair of lines is parallel, perpendicular, or neither.y = 2x + 2 and y = - 
x - 5
A. parallel B. perpendicular C. neither
Suppose that, for a certain exam, a teacher grades on a curve. It is known that the mean is 55 and the standard deviation is 7. There are 50 students in the class. What score would be necessary to obtain a C?
?
?
A. 48 or above B. 62 or above C. 50 or above D. 44 or above E. 42 or above