Solve by completing the square.x2 - 4x - 15 = 0
A. 2 ± 
B. 2 ± 
C. 4 ± 
D. -2 ± 
Answer: A
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Solve.A bulk-rate mail permit costs $182 and each piece of bulk mail sent costs 39 cents. In contrast, the rate for mailing a letter first class is 47 cents per piece. How many pieces of mail would someone need to sent in order to make bulk rate the cheaper way to go?
A. 23 B. 27 C. 20 D. 25
Find the product.(8y + x)(8y - x)
A. 64y2 - 16xy - x2 B. 64y2- x2 C. 64y2 + 16xy - x2 D. 16y2 - x2
Find a function P(x) defined by a polynomial of degree 3 with real coefficients that satisfies the given conditions.Zeros of -5, i, -i and P(-3) = 60
A. P(x) = 3x3 + 15x2 - 3x - 15 B. P(x) = -3x3 - 15x2 - 3x - 15 C. P(x) = -3x3 - 15x2 + 3x + 15 D. P(x) = 3x3 + 15x2 + 3x + 15
Solve the absolute value inequality. Write your answer in interval notation.
- 1 < -7
A. 
B. No solution
C. 
D. 
? 