Use the discriminant to determine if the given equation can be solved by factoring. If it can be solved by factoring, find the factors.21m2 - 26m - 15 = 0
A. Cannot be solved by factoring
B. (3m + 3)(7m - 5)
C. (7m + 3)(3m - 5)
D. (21m - 3)(m - 5)
Answer: C
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What is the maximum value of 
? Restrict your attention to the horizontal span of 0 to 20. Round your answer to two decimal places.
?
A. 39.13 B. 12.46 C. 42.72 D. 11.30
Simplify.(3x)2
A. 3x2 B. 9x C. 9x2 D. 6x2
Solve by graphing.The cost y (in dollars) of car rental is related to the number of miles driven x and is approximated by the linear equation y = 0.25x + 8. Graph the equation and use the graph to estimate to the nearest whole dollar the cost of car rental if the number of miles driven is 24. 
A. $19 B. $14 C. $10 D. $26
Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.x3 + 4x2 - 4x - 16
A. (x - 2)2(x + 4) B. (x2 - 4)(x + 4) C. (x + 2)(x - 2)(x + 4) D. Prime