Solve.A rock falls from a tower that is 73.5 m high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)?
A. 8.6 s
B. 1100 s
C. 8.3 s
D. 3.9 s
Answer: D
Mathematics
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Draw the graph of the equation.x2 - 12x - 12y + 108 = 0
A. 
B. 
C. 
D. 
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Find the derivative.y = 
+ 
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
+ 
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Evaluate. If necessary, find common denominators and simplify completely.5
+ 1
A. 7
B. 6
C. 7
D. 4
Mathematics
Find the LCD. Do not combine fractions.
, 
A. 45x2y5 B. 45x3y3 C. 45xy D. 45x3y5
Mathematics