Solve the equation.
+ 
= 4
A. {2, -2}
B. {
, -2}
C. {0}
D. {-2}
Answer: D
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Solve the problem.In a milling operation, the thickness of the metal bars that can be produced satisfies the inequality 
What range of thicknesses corresponds to this inequality?
A. [1.38, 1.97] B. [0.3, 3.35] C. [0.59, 3.35] D. [0.59, 6.7]
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).
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)
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