Let a and b be positive numbers. Determine whether the statement is true or false.a(-b) is a negative number.
A. True
B. False
Answer: A
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Solve the equation.4x = 256
A. x = 64 B. x = 3 C. x = 5 D. x = 4
(Round your answer to three decimal places.)
A stream of water moving at the rate of v feet per second can carry particles of size
inches. Find the size of the largest particle that can be carried by a stream flowing at the rate of
foot per second.
What will be an ideal response?
Solve the problem.A rock falls from a tower that is 384 feet 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 
Round your answer to the nearest tenth, if necessary.
A. 19.6 sec B. 9216 sec C. 19.2 sec D. 4.9 sec
Find the function value.Find f(k)- 1 when f(x) = 2x2 - 5x + 3
A. 2k2 - 9k - 9 B. 2k2 - 9k + 2 C. 2k2 - 7k - 9 D. 2k2 - 5k + 2