For the given parabola, use the discriminant to determine the number of x-intercepts.y = x2 + 2x + 4
A. one x-intercept
B. two x-intercepts
C. no x-intercepts
Answer: C
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A drug is carried into an organ of volume cm3 by a liquid that enters the organ at the rate of a cm3/sec and leaves it at the rate of b cm3/sec. The concentration of the drug in the liquid entering the organ is c g/cm3. If the concentration of the drug in the organ at time
is increasing at the rate of
?
?g/cm3/sec, and the concentration of the drug in the organ initially is g/cm3, show that the concentration of the drug in the organ at time
is given by
?
What will be an ideal response?
Subtract. Write the answer in lowest terms as a mixed number.
A. 5
B. 5
C. 6
D. 4
Multiply the polynomials.(x2 - 6)(x2 + x - 3)
A. x4 + x3 - 9x2 - 6x + 18 B. x4 + x3 + 9x2 - 6x + 18 C. x4 - 6x2 - 6x + 18 D. x4 + x3 - 6x + 18
Factor the perfect square trinomial completely.64m2 + 48m + 9
A. (8m + 3)(8m - 3) B. (8m - 3)2 C. (8m + 3)2 D. (8m - 4)2