Find the opposite of the polynomial.4x2 + 10x - 5
A. 4x2 - 10x + 5
B. -4x2 - 10x - 5
C. -4x2 - 10x + 5
D. -4x2 + 10x + 5
Answer: C
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Find the vertex, the y-intercept, and the x-intercepts (if any exist), and graph the function.f(x) = x2 - 2x - 3
A. 
Vertex (1, - 4);
x-int = (-1,0) and (3, 0);
y-int = (0, -3)
B. 
Vertex (- 1, - 4);
x-int = (-3,0) and (1, 0);
y-int = (0, -3)
C. 
Vertex (- 1, - 4);
x-int = (-3,0) and (1, 0);
y-int = (0, 3)
D. 
Vertex (1, - 4);
x-int = (1,0) and (3, 0);
y-int = (0, -3)
Provide an appropriate response.Suppose that A and B are both matrices of dimension r × s. Under what conditions can both the product AB and the product BA be found?
A. If r = s B. If r > 1 C. If r = 1 D. There are no conditions under which both products can be found.
Simplify.
? 
A. 
B. 
C. 
D. 
Solve. Round to the nearest ten-thousandth when necessary.An equation used in the study of Class C amplifiers is R = 
,where R is the internal resistance of the tube and ? is the angle that indicates the portion of the cycle during which the current is allowed to flow. Find the value of R when ? is 57°.
A. 0.3464 B. 5.839 C. 0.2714 D. 0.0556