TEKS.MATH.9-12.II.C

Find the inverse of y = 3x +8

• f^-1(x) = 3x - 8/3
• f^-1(x) = 8/3x - 1/3
• f^-1(x) = 1/3x - 8/3
• f^-1(x) = 1/3x + 8/3

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TEKS.MATH.9-12.II.C

Solve the equation by completing the square and then finding the roots. 
x²+ 6x - 4 = 36

• x = -7, 7
• x = 4, -10
• x = -4 +- √7
• x = 10, -4

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TEKS.MATH.9-12.II.C

Factor and solve:
14=2x²- 12x

• x=7,1
• x=-7,1
• x=-1,7
• No solution

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TEKS.MATH.9-12.II.C

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

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TEKS.MATH.9-12.II.C

The sum of the interior angles in a polygon is 3,240^o.  How many sides are in the polygon?

• 10
• 582,840
• 18
• 20

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TEKS.MATH.9-12.II.C

The sum of the interior angles of a polygon is 3960°. How many sides does the polygon have?

• 12
• 24
• 25
• 13

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TEKS.MATH.9-12.II.C

Solve 8 = 2^5x+7

• ⅘
• ¼
• -⅘
• -¼

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TEKS.MATH.9-12.II.C

Find the inverse of the equation

• 2^(x-9)+5=y
• 2^(x+9)-5=y
• 5^(x-9)-5=y

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TEKS.MATH.9-12.II.C

Find x if 5, 9, 11, 12, 13, 14, 17 and x have a mean of 12.

• 15
• 16
• 17
• 18

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TEKS.MATH.9-12.II.C

What is the positive solution to the equation 0 = (1/5)x² - 5?

• (1/5)

• 1

• 5

• -5

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TEKS.MATH.9-12.II.C