Solve the problem.An assistant accountant takes 3 hr longer to file the same number of tax returns as a senior accountant. If they work together, they can file the tax returns in 1 hr. To the nearest tenth of an hour, how long does it take each accountant to file the tax returns working alone?
A. Senior accountant: 1.3 hr
Assistant accountant: 2.3 hr
B. Senior accountant: 2 hr
Assistant accountant: 5 hr
C. Senior accountant: 4.3 hr
Assistant accountant: 4.3 hr
D. Senior accountant: 1.3 hr
Assistant accountant: 4.3 hr
Answer: D
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Solve the initial value problem.
= e2x cos e2x, y(0) = 0
A. y = 
sin e2x - 
sin 1
B. y = - 
sin e2x + 
sin 1
C. y = 
sin e2x - 
D. y = 
sin x
Factor completely. If unfactorable, indicate that the polynomial is prime.5x6 - 5x4
A. 5x4(x - 1)2 B. prime C. 5x4(x + 1)2 D. 5x4(x + 1)(x - 1)
Write the fraction as a decimal.
A. 0.05 B. 0.005 C. 0.5 D. 5.0
Solve the problem.If Emery has $1100 to invest at 6% per year compounded monthly, how long will it be before he has $2100? If the compounding is continuous, how long will it be? (Round your answers to three decimal places.)
A. 106.985 yr, 11.11 yr B. 0.133 yr, 1.078 yr C. 10.804 yr, 10.777 yr D. 0.925 yr, 0.898 yr