Simplify.
A. 1
B. - 
C. 0
D. 
Answer: D
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Write the fraction as a decimal. Round to the nearest thousandth if necessary.
A. 0.025 B. 2.5 C. 0.25 D. 4
Find the line of symmetry.f(x) = x2 - 14x + 49
A. x = 8 B. x = -7 C. x = 7 D. x = -8
Solve the problem.In the formula A = Iekt, A is the amount of radioactive material remaining from an initial amount I at a given time t and k is a negative constant determined by the nature of the material. An artifact is discovered at a certain site. If it has 56% of the carbon-14 it originally contained, what is the approximate age of the artifact? (carbon-14 decays at the rate of 0.0125% annually.) (Round to the nearest year.)
A. 3520 yr B. 4480 yr C. 2014 yr D. 4639 yr
Find the vertices of the hyperbola with the given equation.16y2 - 4x2 = 64
A. (-2, 0), (2, 0) B. (-4, 0), (4, 0) C. (0, -2), (0, 2) D. (0, -4), (0, 4)