Solve the problem.Prices in an economy with a 12% annual inflation rate can be modeled by P = pert, where r is the inflation rate, t is the time in years, and p is the current price. How long will it take for prices in the economy to double at a 12% annual inflation rate?
A. 23.45 years
B. 6.78 years
C. 9.16 years
D. 5.78 years
Answer: D
Mathematics
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Find the indicted product and simplify if possible.The expression 9x2 - 18(x - 3)2 - (x - 6)3 was used to determine the stress in a section of metal.
A. -x3 - 21x2 + 180x - 378 B. -x3 - 9x2 + 378 C. -x3 - 303x2 + 36x + 207 D. -x3 + 9x2 + 54
Mathematics
Simplify the expression.1 + 3(x + 8y)
A. 4x + 8y B. 1 + 24xy C. 1 + 3x + 8y D. 1 + 3x + 24y
Mathematics
Solve the problem.Estimate the sum by rounding each addend to the nearest thousand: 2,239 + 3,855
A. 6100 B. 4000 C. 6000 D. 7000
Mathematics
Complete.20.1 cg = 
dag
A. 0.00201 B. 20,100 C. 2010 D. 0.0201
Mathematics