Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.5x - 0.3y - 4.8z = -1.45.4x - 7.0y + 1.7z = -5.04.8x - 1.7y + 0.7z = 11.0
A. {(6.8, 7.2, 2.3)}
B. {(13.6, 14.5, 4.5)}
C. {(3.4, 3.6, 1.1)}
D. {(27.3, 28.9, 9.0)}
Answer: C
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Solve the problem.An artifact is discovered at a certain site. If it has 55% of the carbon-14 it originally contained, what is the approximate age of the artifact, to the nearest year? (Carbon-14 decays at the rate of 0.0125% annually.)
A. 4400 years old B. 3600 years old C. 2077 years old D. 4783 years old
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. x + 7
B. 
C. x - 7
D. 
Determine the equation of the vertical asymptote for the graph of this function, and state the domain and range of this function.f(x) = ln(x + 3)
A. Vertical asymptote: x = 3; Domain: (-3, ?), Range: (-3, ?) B. Vertical asymptote: x = -3; Domain: (3, ?), Range: (3, ?) C. Vertical asymptote: x = -3; Domain: (-3, ?), Range: (-?, ?) D. Vertical asymptote: x = 3; Domain: (3, ?), Range: (-?, ?)
Solve the equation. 
What will be an ideal response?