Subtract and, if possible, simplify.
- 
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 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 59% 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, if necessary.
A. 4720 years B. 1833 years C. 3280 years D. 4221 years
Solve and check your answer.
- 4x = 2
A. x = - 
B. x = - 
C. x = - 
D. x = 18
Find the phase shift of the function.y = -5 sin 
A. 
units to the left
B. ? units to the right
C. 
units to the right
D. 
units to the left
Simplify. Assume that variables represent positive values.
A. 
B. 
C. 36
D. 6