Solve the polynomial inequality.(x + 1)(x - 7) ? 0
A. [7, ?)
B. (-?, -1] ? [7, ?)
C. [-1, 7]
D. (-?, -1]
Answer: C
Mathematics
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Solve the problem.Find the area between y = (x - 3)ex and the x-axis from x = 3 to x = 8.
A. 4e8 B. e8 + e3 C. e8 - e3 D. 4e8 + e3
Mathematics
Answer the question.If the trinomial ax2 + bx + c is a perfect square, what can we conclude about the solutions of the equation ax2 + bx + c = 0?
A. The equation has exactly one irrational solution. B. The equation has exactly one rational solution. C. The equation has two different rational solutions. D. The equation has no real number solutions.
Mathematics
Solve the system by substitution.2x - 5y = -309x + 7y = 101
A. {(-6, -2)} B. {(5, 8)} C. {(-5, 8)} D. ?
Mathematics
Divide and simplify.
÷ 
A. 4
B. 
C. 
D. 
Mathematics