Solve the inequality, giving its solution set in both interval and graph forms.7x < -70
A. (-?, -10]
B. [-10, ?)
C. (-?, -10)
D. (-10, ?)
Answer: C
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Factor the expression completely. If the polynomial is prime, state this as your answer.-u2 + y2
A. (y - u)(y + u) B. (y2 - u)(y2 + u) C. prime D. (y - u)(y - u)
Solve the equation by completing the square.x2 + 14x + 30 = 0
A. {7 + 
}
B. {-7 - 
, -7 + 
}
C. {7 - 
, 7 + 
}
D. {-14 + 
}
Approximate f(x) to four decimal places.f(x) = 3
, x = -1.7
A. 1.3653 B. 2.9053 C. -0.4551 D. -1.3653
Find the zeros of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = -x2(x + 2)(x2 - 1)
A. x = 0, touches the x-axis and turns around; x = -2, crosses the x-axis; x = -1, crosses the x-axis; x = 1, crosses the x-axis B. x = 0, touches the x-axis and turns around; x = -2, crosses the x-axis; x = 1, touches the x-axis and turns around C. x = 0, touches the x-axis and turns around; x = 2, crosses the x-axis; x = -1, touches the x-axis and turns around; x = 1, touches the x-axis and turns around D. x = 0, crosses the x-axis; x = -2, crosses the x-axis; x = -1, crosses the x-axis; x = 1, crosses the x-axis