Solve the problem. Round amounts to the nearest cent and percents to the nearest tenth of a percent.Markup = $15.07; Rate of markup based on cost = 57.5%. Find the cost and selling price.

A. Cost: $15.07
Selling price: $30.14
B. Cost: $26.21
Selling price: $41.28
C. Cost: $0.26
Selling price: $15.33
D. Cost: $41.28
Selling price: $26.21

Answer: B

Mathematics

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Solve the problem.For two connected gears, the relation  =  holds, where d is the diameter of the gear and N is the number of teeth. Find N1 if d1 = 2.5 in., d2 = 2.292 in., and N2 = 55. If necessary, round to the nearest whole tooth.

A. 70 teeth B. 120 teeth C. 7 teeth D. 60 teeth

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Find the first four terms of the binomial series for the given function.(1 + 6x)-1/2

A. 1 - 3x + x2 - x3
B. 1 - 3x + x2 - x3
C. 1 - 3x - 27x2 - x3
D. 1 - 3x + x2 - x3

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Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.103 mi =  km

A. 64.0 km B. 165.8 km C. 109.2 km D. 97.4 km

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Mathematics

Solve the equation on the interval [0, 2?).sin + sin = 1

A. , 3?
B. , 
C. , 
D. , 

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Mathematics