MATH 117 Final

# MATH 117 Final - 1 w(w 2(w 4 = 0 2 The x coordinate of the...

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1 .) w(w + 2)(w - 4) = 0 2.) The x coordinate of the vertex is x= 2 1 The y coordinate of the vertex is y= 2 11 The equation of the line of symmetry is x= 2 1 The maximum/minimum value of f is 2 11 The value f( 2 1 )= 2 11 is a maximum The correct Graph is A) 3.) A) y x y x x y x 2 3 2 3 3 3 11 6 6 216 = = 4.) b a b a 2 5 50 2 = 5.) 9 20 3 4 3 4 3 5 3 4 3 5 3 4 2 2 16 y y y y y = = 6.) The height is 21 inches 7.) The perimeter is 4x+14 The area is x²+7x 8.) x^2 + 18x + 4 = 0 It is not factorable so we need to use the quadratic formula, x = (-18 ± sqrt(18^2 - 4(1)(4))) / 2(1) x = (-18 ± sqrt(308)) / 2 x = (-18 ± 2sqrt(77)) / 2 x = -9 ± sqrt(77) So the solution is x = -9-sqrt(77) and -9+sqrt(77) 9 .) v = -9 or -5 10.) w(w + 2)(w - 4) = 0

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11.) The simplified form is 4 9 1 + + t t 12.) (5x+5)(4x²+3x+5)=20x³+15x²+25x+20x²+15x+25 =20x³+35x²+40x+25 =4x³+7x²+8x+5 13.) 9 9 18 9 18 9 1 k k k k k = = = - - 14.) ) 1 )( 1 ( ) 9 ( 1 9 1 8 1 1 8 2 2 2 2 ) 1 2 + -
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MATH 117 Final - 1 w(w 2(w 4 = 0 2 The x coordinate of the...

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