Solve the problem.The number of years t it takes for an investment to double if it earns r percent (as a decimal), compounded annually, is t = 
. How long will it take for prices in the economy to double at a 13% annual inflation rate? Round to the nearest year.
A. 23 yr
B. 5 yr
C. 9 yr
D. 6 yr
Answer: D
Mathematics
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Solve the rational inequality. Express the solution in interval notation.
> 0
A. (-6, 2) ? (2, 6) B. (-?, -6) ? (2, 6) C. (-6, 2) ? (6, ?) D. (-?, -6) ? (6, ?)
Mathematics
Use the unit circle to determine the value of the given expression or state that it is undefined.tan (390°)
A. 
B. 
C. - 
D. 
Mathematics
Solve the problem.Carla takes a job with a starting salary of $40,000 for the first year with an annual increase of 4% beginning in the second year. What is Carla's salary, to the nearest dollar, in the sixth year?
A. $51,072 B. $49,428 C. $48,666 D. $47,308
Mathematics
Apply the distributive property.-11x2(12x2 + 7x + 4)
A. -132x4 - 77x2 - 44x B. -132x3 - 77x2 - 44x C. -132x4 - 77x3 - 44x2 D. 132x4 + 77x3 + 44x2
Mathematics