Solve.A fossilized leaf contains 15% of its normal amount of carbon 14. How old is the fossil? Use 5600 years as the half-life of carbon 14 and round to the nearest year.
A. 21,839 yr
B. 15,299 yr
C. 35,828 yr
D. 1311 yr
Answer: B
Mathematics
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Use division to express the fraction in the form quotient + 
.
A. 3 + 
B. 3 + 
C. 7 + 
D. 3x + 
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Use the given graph to find the x-intercept and the zero of the function.
A. (0, 0); 0 B. (1, 0); 1 C. (6, 1); 6 D. (6, 0); 6
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Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Mathematics
Find the real solutions of the equation.x2 + 5x - 
= 12
A. {25, -25}
B. {5}
C. {3}
D. {
, 
}
Mathematics