Evaluate the integral.
A. 9ex - ex + C
B. 9ex - 9xex + C
C. 9xex - 9ex + C
D. xex - 9ex + C
Answer: C
Mathematics
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Find the zero of the linear function.f(x) = 8x - 48
A. -40 B. 40 C. 6 D. -6
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Write the number in scientific notation.57,000,000
A. 5.7 × 10-6 B. 5.7 × 10-7 C. 5.7 × 106 D. 5.7 × 107
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Solve the equation. Express the solution in scientific notation.(7.9 × 10-11)x = 8.9 × 10-3
A. {1.13 × 108 } B. {1.13 × 10-8 } C. {1.13 × 10-14 } D. {1.68 × 109 }
Mathematics
Find an equation for the line with the given properties.The solid line L contains the point (-2, 4) and is perpendicular to the dotted line whose equation is 
Give the equation of line L in slope-intercept form.
A. y - 4 = 2(x + 2)
B. y - 4 = - 
(x + 2)
C. y = 
x + 3
D. y = - 
x + 3
Mathematics