A stone is thrown straight up from the roof of an 48-ft building. The distance (in feet) of the stone from the ground at any time t (in seconds) is given by 
.
?Sketch the graph ofh. When is the stone rising, and when is it falling? If the stone were to miss the building, when would it hit the ground?
?
A. ?
Rising in the time interval (0, 1);
falling in the time interval (1, 3);
when t = 3 sec
B. ?
Rising in the time interval (0, 1);
falling in the time interval (1, 3);
when t = 3 sec
C. ?
Rising in the time interval (3, -1);
falling in the time interval (-1, 1);
when t = 1 sec
Answer: A
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?
?
A. Increasing on 
, decreasing on 
B. Increasing on 
C. Increasing on 
, and 
, decreasing on 
D. Increasing on 
, decreasing on 
, and
Write the rational expression in lowest terms.
A. - 
B. 
C. 
D. 
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A. y = -x - 5 B. y = x + 5 C. y = x - 5 D. y = x - 3