Simplify.85 - 18(3) + 140 ÷ (-10)
A. 17
B. -21
C. 187
D. -958
Answer: A
Mathematics
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Solve the equation.0.05(40) + 0.40x = 0.20(40 + x)
A. {15} B. {40} C. {30} D. {20}
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Find the indicated intercept(s) of the graph of the function.y-intercept of f(x) = 
A. (0, 8)
B. 
C. 
D. none
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Find the area of the surface generated by revolving the curve about the indicated axis. x = sin t, y = 7 + cos t, 0 ? t ? 2?; x-axis
A. 7?2 B. 42?2 C. 28?2 D. 21?2
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A total of $23,000 is invested in two corporate bonds that pay 3.5% and 5% simple interest. The investor wants an annual interest income of $880 from the investments. What amount should be invested in the 3.5% bond? ?
A. $22,800 B. $18,000 C. $23,000 D. $18,300 E. $18,100
Mathematics