Find the y-intercept of the polynomial function.f(x) = -x2(x + 4)(x - 7)
A. 0
B. 28
C. -7
D. -28
Answer: A
Mathematics
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Graph the parametric equations.x = 1 + 4 sin t, y = 3 + 4 cos t; 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Simplify.-2(x-5y-1)-4
A. 
B. 
C. (-2)4x20y4
D. -2x20y4
Mathematics
Add or subtract as indicated. If terms are not like radicals and cannot be combined, so state. Assume all variables represent nonnegative real numbers.16y2
+ 8x2
A. 16x4y2
+ 8x2y4
B. 8x2y2
C. 24x2y2
D. 16x2y2
+ 8x2y2
Mathematics
Choose the correct graph of the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics