Factor by grouping.15z2 - 8z - 16
A. 15z2 - 8z - 16
B. (3z + 4)(5z - 4)
C. (3z - 4)(5z + 4)
D. (15z - 4)(z + 4)
Answer: C
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Find the value for the function.Find f(x - 1) when f(x) = 4x2 + 3x + 4.
A. 4x2 - 5x + 11 B. -5x2 + 4x + 5 C. 4x2 - 5x + 5 D. 4x2 + 19x + 11
Use factoring to solve the equation.3x2 - 23x = 8
A. -3, 8
B. - 
, 8
C. - 
, 3
D. - 
, -3
Solve the problem.The resistance, in ohms, of a 25 foot piece of wire is given by the function 
, where d is the diameter of the wire in inches. What happens to the resistance of the wire as the diameter of the wire decreases?
A. The resistance decreases. B. The resistance remains constant. C. The resistance increases. D. The answer cannot be determined without additional information.
Solve the problem.A rock falls from a tower that is 368 feet high. As it is falling, its height is given by the formula 
How many seconds (in tenths) will it take for the rock to hit the ground (h = 0)?
A. 8464 sec B. 19.2 sec C. 4.8 sec D. 18.8 sec