Solve. Express the result in scientific notation. Round to the nearest hundredth, if necessary.If the density of a substance is 9.89 × 10-3 tons per cubic foot, what would be the mass of 
cubic feet of this substance. (Use the formula D = 
.)
A. 5.29 × 10-6 tons
B. 0.53 × 10-7 tons
C. 5.29 × 10-7 tons
D. 5.29 × 10-8 tons
Answer: C
Mathematics
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Perform the indicated operation and simplify if possible.
A. 
B. 5
C. 2
D. 2
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
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Rationalize the denominator. Assume all variables have nonzero values.
A. 
B. 
C. 
D. 15
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Solve the problem.Khang borrows $2500 at a rate of 9.5% compounded semiannually. Find how much Khang owes at the end of 3 years.Use: A = P
ntwhere:A = final amountP = $2500 (the amount borrowed)r = 9.5% = 0.095 (the annual rate of interest)n = 2 (the number of times interest is compounded each year)t = 3 (the duration of the loan in years)
A. $3302.66 B. $15,712.50 C. $2873.44 D. $3632.93
Mathematics