Answer the question about percent. Round your answer to the nearest tenth of a percent, if necessary.225 is what percent of 1820?
A. 0.1%
B. 0.0%
C. 808.9%
D. 12.4%
Answer: D
Mathematics
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Solve the problem by integration.Find the area bounded by the x-axis and the curve y = 
between the x values of 0.7 and 3.
A. 4
B. 
C. 4
D. 4ecot-13
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Multiply using the method indicated.311 × 58; conventional algorithm
A. 18,349 B. 18,038 C. 36,076 D. 18,096
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Find the slope of the line tangent to the graph of the function at the given value of x.y = 
- 
; x = 4
A. - 
B. 
C. 
D. - 
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Solve the problem.The revenue received from the sale of electric heaters is seasonal, with maximum revenue in the winter. Let the revenue received from the sale of heaters be approximated by R(x) = 240 cos 2?x + 600, where x is time in years, measured from January 1. Find R'(x) for March 1st.
A. 0
B. -240?
C. -240?
D. -240?
Mathematics