Solve the problem.Find all values of b that will make the polynomial a perfect square trinomial. 25x2 + 40x + b
A. 80
B. 4, -4
C. 4
D. 16
Answer: D
Mathematics
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Find the GCD for the pair of natural numbers.864, 1296
A. 6 B. 432 C. 144 D. 2592
Mathematics
Solve.How many 4-letter codes can be formed with the letters 
with repetition?
A. 240 B. 4096 C. 56 D. 336
Mathematics
Solve and graph. Write the answer in set-builder notation.-2x > -19
A. 
B. 
C. 
D. 
Mathematics
For the compound inequality, give the solution set in both interval and graph forms.x < -2 and x < 9
A. (-?, 9)
B. (-2, 9)
C. (-?, -2)
D. (-?, -2) ? (9, ?)
Mathematics