Exam 2: Polynomial and Rational Functions

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Do the operation and express the answer in a + bi form. (5+16)(44)( 5 + \sqrt { - 16 } ) ( 4 - \sqrt { - 4 } )

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Solve the inequality and graph the solution on the real number line. x2>2x+48x ^ { 2 } > 2 x + 48

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A small theater has a seating capacity of 2000.When the ticket price is $20, attendance is 1500.For each $1 decrease in price, attendance increases by 125.Write the revenue R of the theater as a function of ticket price x.

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Solve the inequality and graph the solution on the real number line. 3x5x50\frac { 3 x - 5 } { x - 5 } \geq 0

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If x = 27\frac { 2 } { 7 } is a root of 49x3126x2+60x8=049 x ^ { 3 } - 126 x ^ { 2 } + 60 x - 8 = 0 , use synthetic division to factor the polynomial completely and list all real solutions of the equation.

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Which of the following is the graph of the given equation? f(x)=2xx+3f ( x ) = \frac { 2 - x } { x + 3 }

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Find the values of x and y. ​ x + 59i = y - yi ​ x = __________ ​ y = __________

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Solve the inequality 36xx3<036 x - x ^ { 3 } < 0 and write the solution set in interval notation.

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Use synthetic division to express P(x)=3x310x223x35P ( x ) = 3 x ^ { 3 } - 10 x ^ { 2 } - 23 x - 35 in the form (divisor)(quotient) + remainder for the divisor x - 5.

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The growth of a red oak tree is approximated by the function G=0.003t3+0.137t2+0.458t0.839G = - 0.003 t ^ { 3 } + 0.137 t ^ { 2 } + 0.458 t - 0.839 Where G is the height of the tree (in feet) and t (2t34)( 2 \leq t \leq 34 ) is its age (in years). Select the correct graph of the function.

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Use long division to divide. (x4+7x3+10x2x2)÷(x+2)\left( x ^ { 4 } + 7 x ^ { 3 } + 10 x ^ { 2 } - x - 2 \right) \div ( x + 2 )

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Use the Remainder Theorem and synthetic division to find the function value. g(x)=3x6+4x46x2+4,g(0)g ( x ) = 3 x ^ { 6 } + 4 x ^ { 4 } - 6 x ^ { 2 } + 4 , \quad g ( 0 )

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Given f(x)=x2+49x+7,g(x)=x7f ( x ) = \frac { x ^ { 2 } + 49 } { x + 7 } , g ( x ) = x - 7 .Determine the domains of f(x) and g(x).

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Find the domain of x in the expression x33x4\sqrt [ 4 ] { x ^ { 3 } - 3 x } .

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Determine the zeros (if any) of the rational function g(x)=5+4x2+5g ( x ) = 5 + \frac { 4 } { x ^ { 2 } + 5 } .

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Determine the equations of any horizontal and vertical asymptotes of f(x)=x2x2+4f ( x ) = \frac { x ^ { 2 } } { x ^ { 2 } + 4 } .

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From the graph of the quadratic function f(x)=(x+6)21f ( x ) = ( x + 6 ) ^ { 2 } - 1 , determine the equation of the axis of symmetry.

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Write the quadratic function f(x)=x2+8x8f ( x ) = - x ^ { 2 } + 8 x - 8 in standard form.

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Determine the equations of any horizontal and vertical asymptotes of f(x)=x2+10x+24x3+6x2x6f ( x ) = \frac { x ^ { 2 } + 10 x + 24 } { x ^ { 3 } + 6 x ^ { 2 } - x - 6 } .

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Select the graph of the quadratic function f(x)=x2+2x+2f ( x ) = x ^ { 2 } + 2 x + 2 .Identify the axis of symmetry.

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