Solve for x.
= 28
A. 0
B. -1
C. 1
D. 2
Answer: A
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Multiply.-6 ? (-16)
A. 102 B. -102 C. -96 D. 96
Solve the problem.Suppose the amount of a radioactive element remaining in a sample of 100 milligrams after x years can be described by A(x) = 100e-0.01648x. How much is remaining after 202 years? Round the answer to the nearest hundredth of a milligram.
A. 0.04 milligrams B. 2790.93 milligrams C. 332.90 milligrams D. 3.58 milligrams
Find the unknown number in the proportion. Round answer to the nearest hundredth when necessary.
= 
A. x = 0.07 B. x = 2.8 C. x = 36.75 D. x = 3.5
Solve the problem.The population of a city at the beginning of 2005 is 1,259,000. What will the population of the city be at the beginning of 2015 if it decreases by 2.4% each year? Round to the nearest whole number.
A. 956,840 B. 963,771 C. 1,011,752 D. 987,470