Find the sum of the arithmetic sequence.56, 58, 60, 62, ..., 78
A. 80
B. 696
C. 672
D. 804
Answer: D
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Construct a truth table for the statement.(s ? ~q) ? (s ? ~q)
A. 
| T | T | F |
F F F
F T T
B.
| T | T | T |
F T F
F F F
C.
| T | T | F |
F T T
F F T
D.
| T | T | T |
F T F
F F T
Simplify the expression. The result will be one of sin x, cos x, tan x, cot x, sec x, csc x.
A. cos x B. sin x C. csc x D. sec x
Use a truth table to determine whether the symbolic form of the argument is valid or invalid.q ? pp ? r----? r ? q
A. 
Symbolic argument is valid.
B. 
Symbolic argument is valid.
C. 
Symbolic argument is invalid.
D. 
Symbolic argument is invalid.
Solve the problem.If a ball is thrown upward at 19.6 meters per second from the top of a building that is 70 meters high, the height of the ball can be modeled by 
meters, where t is the number of seconds after the ball is thrown. What is the ball's maximum height?
A. 70 m B. 84.7 m C. 128.8 m D. 89.6 m