Recent Research Using U

question 47

Multiple Choice

Recent research using U.S.tax records has shown that the life expectancy for the wealthiest 1% in the United States has risen _____ years,while increasing _____ year for the poorest 1% between 2001 and 2014.

• A)2 to 3;only 1
• B)2 to 3;less than half a
• C)4 to 5;less than half a
• D)4 to 5;only1

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Definitions:

Parabola

The graph of a quadratic function, represented as a symmetric curve that opens either up or down.

Focus

A point used in the definitions of conic sections, such as ellipses and hyperbolas, from which distances are measured to define the curves.

Vertex

The point where two lines, or edges, of a geometric figure meet; in the context of a parabola, the peak or the lowest point, depending on its orientation.

Circle

A round plane figure, every point of which is equidistant from a fixed center point, defined by the equation (x-h)^2 + (y-k)^2 = r^2 in a coordinate plane.