Solve the problem.Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is P = P0 e-0.0244t. How long will it take for 15 grams of strontium to decay to 5 grams? Round answer to 2 decimal places.
A. 4.50 years
B. 450.25 years
C. 45.03 years.
D. 40.50 years
Answer: C
Mathematics
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A. 
B. 
C. - 
D. - 
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Divide.
A. 9.7 B. 1.97 C. 0.97 D. 19.7
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Solve the problem.The product of two consecutive integers is 11 more than their sum. Find the integers.
A. 4, 5 or -3, -2 B. -3, -2 C. 4, 5 D. 3, 4 or -3, -2
Mathematics
Solve the problem.6% of the residents of a city are originally from India. The population of the city is 103,400. How many residents of the city are originally from India?
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Mathematics