Solve the equation. +  = 4

A. {2, -2}
B. {, -2}
C. {0}
D. {-2}


Answer: D

Mathematics

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Solve the problem.The concentration C of a certain drug in a patient's bloodstream is given by  .a) Find the horizontal asymptote of C(t).b) Using a graphing utility, determine the time at which the concentration is highest.

Fill in the blank(s) with the appropriate word(s).

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Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.

A. no solution B. (-3, 1, -2) C. (-3, -2, 1) D. (-2, 1, -3)

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Use the discriminant of the equation to determine the number of x-intercepts.f(x) = x2 + 8x + 21

A. One x-intercept B. Two x-intercepts C. No x-intercepts

Mathematics