Solve the problem.The amount of a radioactive substance present, in grams, at time t in months is given by the formula 
Find the number of grams present in 4 years. If necessary, round to three decimal places.
A. 2140.644
B. 214.064
C. 0.000
D. 0.001
Answer: D
Mathematics
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Determine whether the infinite geometric series has a limit. If a limit exists, find it.1 + 
+ 
+ . . .
A. 
B. 
C. 
D. No limit
Mathematics
Divide, if possible.
A. 0
B. 
C. 
D. Undefined
Mathematics
Solve the problem.The marginal price for a weekly demand of x bottles of cough medicine in a drug store is given by 
Find the price-demand equation if the weekly demand is 125 when the price of a bottle of cough medicine is $4. What is the weekly demand (to the nearest bottle) when the price is $3?
A. 
B. 
C. 
D. 
Mathematics
Use the graph to evaluate the limit.
f(x)
A. 0 B. -1 C. 6 D. does not exist
Mathematics