Solve the problem.An object is thrown upward from the top of a 
building with an initial velocity of 48 feet per second. The height h of the object after t seconds is given by the quadratic equation 
When will the object hit the ground?
A. 2 sec
B. 160 sec
C. 5 sec
D. -2 sec
Answer: C
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The graph of a function f is given. Use the graph to answer the question.How often does the line y = 5 intersect the graph?
A. once B. twice C. three times D. does not intersect
For 
and 
, find
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?
A. 
B. 
C. 
D. 
E. 
Convert the following.2.51 centimeters to millimeters
A. 0.251 mm B. 25.1 mm C. 251 mm D. 2510 mm
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the 
A. 10-5 B. 1.61 C. 0.2 D. 105