Solve.An artifact is discovered at a certain site. If it has 54% of the 
it originally contained, what is the approximate age of the artifact to the nearest year? (
decays at the rate of 0.0125% annually.)
A. 3680 years
B. 4929 years
C. 2141 years
D. 4320 years
Answer: B
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Use the given values of a and b and express the given limit as a definite integral.
?xk, a = -5, b = 4
A. 
B. 
C. 
D. 
Use elimination to solve each system of equations, if possible. Identify the system as consistent or inconsistent. If the system is consistent, state whether the equations are dependent or independent. 7x - 7y = -284x - 2y = -16
A. (-5, 1); consistent and independent B. (-4, 1); consistent and independent C. infinitely many solutions and dependent D. (-4, 0); consistent and independent
Use the partial sum formula to find the partial sum of the given arithmetic sequence.Find the sum of the first four terms of the arithmetic sequence: 1, 12, 23, . . . .
A. 36 B. 140 C. 70 D. 48
How many permutations does a combination lock have if each combination has three numbers, no two numbers of any combination are equal, and the lock has 45 numbers?
A. 85,137 B. 85,199 C. 85,131 D. 85,140