Exam 2: Polynomial, Power, and Rational Functions

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Write an equation for the quadratic function whose graph contains the given vertex and point. -Vertex (2,5)( 2 , - 5 ) , point (4,41)( - 4 , - 41 )

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Write the word or phrase that best completes each statement or answers the question. Graph the rational function and analyze it in the following way: find the intercepts, asymptotes, use limits to describe the behavior at the vertical asymptotes and the end behavior. Find the domain and range. Determine where the function is continuous and where it is increasing and decreasing. Find any local extrema. - f(x)=x2+x2x23x4f ( x ) = \frac { x ^ { 2 } + x - 2 } { x ^ { 2 } - 3 x - 4 }  Write the word or phrase that best completes each statement or answers the question. Graph the rational function and analyze it in the following way: find the intercepts, asymptotes, use limits to describe the behavior at the vertical asymptotes and the end behavior. Find the domain and range. Determine where the function is continuous and where it is increasing and decreasing. Find any local extrema. - f ( x ) = \frac { x ^ { 2 } + x - 2 } { x ^ { 2 } - 3 x - 4 }          Write the word or phrase that best completes each statement or answers the question. Graph the rational function and analyze it in the following way: find the intercepts, asymptotes, use limits to describe the behavior at the vertical asymptotes and the end behavior. Find the domain and range. Determine where the function is continuous and where it is increasing and decreasing. Find any local extrema. - f ( x ) = \frac { x ^ { 2 } + x - 2 } { x ^ { 2 } - 3 x - 4 }

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Determine the x values that cause the function to be (a) zero, (b) undefined, (c) positive, and (d) negative. - f(x)=3x4(x+6)x5f ( x ) = \frac { 3 x - 4 } { ( x + 6 ) \sqrt { x - 5 } }

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Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth. -Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth. -

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Describe how the graph of the given function can be obtained by transforming the graph of the reciprocal function f(x) = 1/x. - f(x)=23xx4f ( x ) = \frac { 2 - 3 x } { x - 4 }

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Write an equation for the quadratic function whose graph contains the given vertex and point. -Vertex (3,5)( - 3,5 ) , point (3,113)( 3,113 )

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Solve the problem. Round as appropriate. -The volume V\mathrm { V } of a given mass of gas varies directly as the temperature T\mathrm { T } and inversely as the pressure P\mathrm { P } . If V=\mathrm { V } = 286.0in3286.0 \mathrm { in } ^ { 3 } when T=260\mathrm { T } = 260 ^ { \circ } and P=10lb/in2\mathrm { P } = 10 \mathrm { lb } / \mathrm { in } ^ { 2 } , what is the volume when T=260\mathrm { T } = 260 ^ { \circ } and P=20lb/in2\mathrm { P } = 20 \mathrm { lb } / \mathrm { in } ^ { 2 } ?

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Find all of the real zeros of the function. Give exact values whenever possible. Identify each zero as rational or irrational. - f(x)=x33x27x+21f ( x ) = x ^ { 3 } - 3 x ^ { 2 } - 7 x + 21

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Determine whether the power function is even, odd, or neither. - f(x)=211x11/2f ( x ) = \frac { 2 }{ 11 } x^{ 11 / 2}

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Graph the function in a viewing window that shows all of its extrema and x-intercepts. - f(x)=x35x219x+30f ( x ) = - x ^ { 3 } - 5 x ^ { 2 } - 19 x + 30  Graph the function in a viewing window that shows all of its extrema and x-intercepts. - f ( x ) = - x ^ { 3 } - 5 x ^ { 2 } - 19 x + 30

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Divide using synthetic division, and write a summary statement in fraction form. - 5x4+x3+2x2+3x1x1\frac { - 5 x ^ { 4 } + x ^ { 3 } + 2 x ^ { 2 } + 3 x - 1 } { x - 1 }

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State the domain of the rational function. - f(x)=14x+5f ( x ) = \frac { 14 } { x + 5 }

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Choose the one alternative that best completes the statement or answers the question. Describe how to obtain the graph of the given monomial function from the graph of g(x) = xn with the same power n. - f(x)=14x4f ( x ) = \frac { 1 } { 4 } x ^ { 4 }

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Solve the polynomial inequality. - (x+1)(x6)(x7)>0( x + 1 ) ( x - 6 ) ( x - 7 ) > 0

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Write the word or phrase that best completes each statement or answers the question. Write a sentence that expresses the relationship in the formula, using the language of variation or proportion. - r=dt, where r is the rate by which distance d is covered in time tr = \frac { d } { t } \text {, where } r \text { is the rate by which distance } d \text { is covered in time } t

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Solve the problem. -A rectangular piece of cardboard measuring 24 inches by 30 inches is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let xx represent the length of a side of each such square. What is the maximum volume of this box? If necessary, round to 2 decimal places.

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Write the function as a product of linear and irreducible quadratic factors, all with real coefficients. - f(x)=x44x311x24x12f ( x ) = x ^ { 4 } - 4 x ^ { 3 } - 11 x ^ { 2 } - 4 x - 12

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Graph the function in a viewing window that shows all of its extrema and x-intercepts. - f(x)=2x(x+1)(x+2)f ( x ) = 2 x ( x + 1 ) ( x + 2 )  Graph the function in a viewing window that shows all of its extrema and x-intercepts. - f ( x ) = 2 x ( x + 1 ) ( x + 2 )

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Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth. -Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth. -

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Use the graph to guess possible linear factors of f(x). Then completely factor f(x) with the aid of synthetic division. - f(x)=5x3+33x2+31x69f(x)=5 x^{3}+33 x^{2}+31 x-69  Use the graph to guess possible linear factors of f(x). Then completely factor f(x) with the aid of synthetic division. - f(x)=5 x^{3}+33 x^{2}+31 x-69

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