Use a calculator to evaluate the trigonometric function 
to four decimal places.
?
A. -1.6266
B. -1.4281
C. -0.6148
D. 0.8192
E. -0.7002
Answer: D
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Solve the problem.The concentration of a certain drug in the bloodstream x hr after being administered is approximately 
Use the differential to approximate the change in concentration as x changes from 1 to 1.52.
A. 0.42 B. 0.14 C. 0.18 D. 0.20
Solve the problem.For an alternating series 
where it is not true that un ? un+1 for sufficiently large n, what can be said about the convergence or divergence of the series?
A. The series may or may not converge. B. The series always diverges. C. The series always converges.
Solve the system by using the inverse of the coefficient matrix. x - 2y + 3z = 114x + y - z = 42x - y + 3z = 10
A. ? B. {(-2, -3, 3)} C. {(2, 3, 5)} D. {(2, -3, 1)}
Find the net cost. Round to the nearest cent.$79.40 less 15/25/10
A. $29.40 B. $45.56 C. $39.70 D. $49.23