TEKS.MATH.9-12.II.A

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x
• y=30(5000)^x
• y=5000(1.3)^x
• y=5000x^x

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TEKS.MATH.9-12.II.A

Write the equation of the line.

• y = -1/3x - 2
• y = 1/3x - 2
• y = 3x - 2
• y = -3x - 2

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TEKS.MATH.9-12.II.A

Find the equivalent expression.

(-9)(-9)(-9)(-9)(-9)

• -9⁵
• (-9)⁵
• -9 x 5
• -9 + -9 + -9 + -9+ -9

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TEKS.MATH.9-12.II.A

Find the missing value "c" to create a perfect square trinomial:
x² – 8x  + ___ 

• -4
• 16
• 4
• 8

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TEKS.MATH.9-12.II.A

The equation for this table is

• y = 3x + 50
• y = 50^x
• y = 3^x
• y = 50(3^x)

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TEKS.MATH.9-12.II.A

Factor
5ab²c¹¹ + 2bc⁵

• bc⁵(5ab²c⁶ + 2b)
• bc⁵(5abc⁶ + 2)
• b²c⁵(5bc⁶ + 2)
• c4(5a²b²c⁷ + 2bc)

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TEKS.MATH.9-12.II.A

What is the equation of the graph?

•  y = 2 cos x
• y = sin x
• y = 2 sin x
• y = sin 2x 

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TEKS.MATH.9-12.II.A

What are the x- and y-intercepts of the linear function given by the equation x + y = -2

• (-2, -2)

• (-2, 0) and (0, -2)

• (0, 0)

• (2, 0) and (0, 2)

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TEKS.MATH.9-12.II.A

Given f(x) = 2x and g(x) = x²+3 , find f(g(x)).

• x²+2x+3
• 4x²+3
• 2x²+3
• 2x²+6

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TEKS.MATH.9-12.II.A

Write the explicit formula for the sequence.

216, 72, 24, 8, ...

• $a_n=216\cdot\left(\frac{1}{3}\right)^{\left(n-1\right)}$

• $a_n=8\cdot3^{\left(n-1\right)}$

• $a_n=216-144\left(n-1\right)$

• $a_n=216\cdot3^{\left(n-1\right)}$

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TEKS.MATH.9-12.II.A