Solve the problem.Suppose the amount of a radioactive element remaining in a sample of 100 milligrams after x years can be described by 
. How much is remaining after 164 years? Round the answer to the nearest hundredth of a milligram.
A. 0.02 mg
B. 4199.54 mg
C. 373.76 mg
D. 2.38 mg
Answer: D
Mathematics
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Solve the problem.If Gloria received a 12 percent raise and is now making $22,400 a year, what was her salary before the raise? Round to the nearest dollar if necessary.
A. $20,000 B. $20,400 C. $21,000 D. $19,712
Mathematics
Divide and simplify.
A. - 
B. - 
C. - 
D. - 
Mathematics
Solve the system of equations using Cramer's Rule, if applicable.
A. 
B. ?
C. 
D. 
Mathematics
Solve the problem.The number of miles per gallon of gasoline that a vehicle averages varies inversely as the average speed the car travels. A vehicle gets 16 miles per gallon at 53 mph. How many miles per gallon will it get at 
A. 0.04 mpg B. 11.2 mpg C. 0.09 mpg D. 22.9 mpg
Mathematics