Solve the problem.A rock falls from a tower that is 68.6 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. 8.3 s
B. 3.7 s
C. 1000 s
D. 8 s
Answer: B
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Evaluate the expression.
A. 30
B. 2!
C. 6
D. 
Find the work done by F over the curve in the direction of increasing t.F = -8xi - 6x5y3j + (-7z + 9y2)k ; the path is 
where C1 is the straight line from 
to 
C2 is the straight line from (1, 0, 0) to (1, 1, 0), and C3 is the straight line from (1, 1, 0) to (1, 1, 1)
A. W = 0
B. W = - 4
C. W = - 
D. W = 1
Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.x2 - 25x + 625
A. (x + 25)2 B. (x - 25)2 C. Prime D. (x + 25)(x - 25)
Show that the two ordered pairs are solutions to the given equation. Then use the graph of the two points to determine another solution. Answers may vary.x + 2y = 8; (2, 3), (-2, 5)
What will be an ideal response?