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Solve:

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EOCT Review Which of the following is the graph of a cubic? c

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EOCT Review Given the graph below, which of the following are true? I)f (x) is increasing on the interval 1 < x < 3. II)f (x) has exactly 2 zeros from -1 ≤ x ≤ 5. III) f (x) is decreasing on the interval 0 < x < 2. IV) f (x) has a local maximum at x = 3. a)I and IIb) I and III c) I and IVd) I, II, and IV d

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EOCT Review Find the 25th term of the sequence 7, 11, 15, 19, 23,... a)103b) 104 c) 107d) 111 a

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3.12 Intersection of Graphs Algebraically – Get all terms on one side and solve. Graphically – Graph each function separately and look for the points where they cross.

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f(x) = 2x + 5, g(x) = 3x - 2 Ex. 1 GraphicallyAlgebraically 2x + 5 = 3x – 2 -x + 5 = - 2 -x = -7 x = 7

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f(x) = 2x 2 - 3, g(x) = x 2 – 2x Ex. 2 GraphicallyAlgebraically 2x 2 - 3 = x 2 – 2x x 2 - 3 = - 2x x 2 + 2x - 3 = 0 (x + 3) (x – 1) = 0 x = -3, 1

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