Solve the problem.A bridge is built in the shape of a parabolic arch. The bridge arch has a span of 158 feet and a maximum height of 30 feet. Find the height of the arch at 10 feet from its center.
A. 1.9 ft
B. 0.1 ft
C. 29.5 ft
D. 8.8 ft
Answer: C
Mathematics
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Determine which numbers in the set are solutions to the equation.7n + n = 64; {8, 9, 512}
A. 512 B. 9 C. 8 and 9 D. 8
Mathematics
Construct a truth table for the statement.~p ? ~s
A. 
| T | T | T |
F T F
F F T
B.
| T | T | F |
F T F
F F T
C.
| T | T | F |
F T T
F F T
D.
| T | T | F |
F T F
F F F
Mathematics
Simplify the expression. If any variables exist, assume that they are positive.7
+ 15
A. 22
B. 
C. 22
D. 22
Mathematics
Solve the problem.The following table shows the amount of income tax paid in 2005 by four people selected at random from a certain town. 
Find the average amount of income tax paid in 2005 by the two women.
A. $4700 B. $3983.75 C. $3267.50 D. $9400
Mathematics