Solve the polynomial inequality. Express your solution on a number line using interval notation.(x + 7)(x + 6)(x + 3) < 0
A. (-3, ?)
B. (-?, -7) ? (-6, -3)
C. (-?, -6)
D. (-7, -6) ? (-3, ?)
Answer: B
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The bar-graph shows the average living expenses of an undergraduate student. Provide an appropriate response.
Use a mathematical model to predict the average living expenses of an undergraduate student in 2007
A. $8500 B. $10,250 C. $9550 D. $8150
Solve.A science student watching a group of ants moving along a straight line determines that their position x along the line as a function of time t is given by 
Give an equivalent expression for x(t) by factoring out a common factor.
A. t(t3 + 3t2 + 24t) B. t(t3 + 3t2 - 12t + 36) C. t(t2 + 3t + 24) D. t(t2 + 3t - 24)
Factor when possible.4x2 + 49
A. (2x + 7)2 B. (2x + 7)(2x - 7) C. (2x - 7)2 D. Prime
The matrix is the final matrix form for a system of two linear equations in variables x1 and x2. Write the Solution of the system.
A. x1 = 3 x2 = 5 B. x1 = -5 x2 = -3 C. x1 = 5 x2 = t for any real number t D. x1 = 5 x2 = 3