Solve the problem.A certain radioactive isotope has a half-life of approximately 1700 years. How many years would be required for a given amount of this isotope to decay to 75% of that amount?
A. 425 yr
B. 631 yr
C. 706 yr
D. 3400 yr
Answer: C
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Evaluate the integral.
A. 4
B. 
C. 8
D. 144
Solve the problem.Use the inflation proportion to estimate the 2017 price of a jacket which costs $280 in 2005. Assume that the price increased at the average annual rate shown in the table below. Round your answer to the nearest dollar.Consumer Price Index* (Selected Years)YearAverage CPI-U% Change in CPI-U198082.413.51985107.63.61990130.75.41995152.42.82000172.23.42005195.33.42010218.11.62015237.00.12016240.01.32017245.12.1Data from Bureau of Labor Statistics.*The period 1982 to 1984: 100
A. $357 B. $380 C. $351 D. $362
Find the angle in degrees when given the trigonometric values. ? represents the unknown angle measure.csc ? = 1.961
A. 27.560° B. 30.660° C. 27.56° D. 30.66°
Evaluate the determinant.
A. 17 B. 379 C. -79 D. -17