Find the y-intercept of the polynomial function.f(x) = -x2(x + 4)(x - 9)
A. -9
B. -36
C. 36
D. 0
Answer: D
Mathematics
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Graph on the number line, and express in interval notation.The set of all real numbers between -2 and 2 excluding -2 and including 2.
A. (-2, 2]
B. (-2, 2)
C. [-2, 2]
D. [-2, 2)
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Multiply mentally.700 ? 400
A. 280,000 B. 279,600 C. 280,400 D. 1100
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Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
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Provide an appropriate response.Find the indefinite integral 
dx.
A. - 6 cos6 x + C
B. 6 sin6 x + C
C. - 
cos 7 x + C
D. 
sin7 x + C
Mathematics