Write the fraction as a percent rounded to the nearest tenth, if necessary.
A. 280%
B. 560%
C. 28%
D. 50%
Answer: A
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Add.7.471 + 18.827 + 170.160
A. 196.448 B. 196.348 C. 196.458 D. 196.358
Write the rational number in the form of an infinite geometric series.
A. 0.85 + 0.085 + 0.0085 + ... B. 0.85 + 0.0085 + 0.000085 + ... C. 0.8 + 0.005 + 0.00008 + ... D. 8.5 + 0.005 + 0.00005 + ...
A certain small country has $20 billion in paper currency in circulation, and each day $70 million comes into the country's banks. The government decides to introduce new currency by having the banks replace old bills with new ones whenever old currency comes into the banks. Let x = x (t) denote the amount of new currency in circulation at time t with x (0)=0. Formulate and solve a mathematical model in the form of an initial-value problem that represents the ”flow” of the new currency into circulation (in billions per day).
What will be an ideal response?
Find the product, if possible.
A. 
B. 
C. 
D. 