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**Combine it All Together**

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**A function is described by the equation f (x) = x2 + 5**

A function is described by the equation f (x) = x The replacement set for the independent variable is {1, 5, 7, 12}. Which of the following is contained in the corresponding set for the dependent variable? A 0 B 6 C 7 D 15

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**Which equation could be used to generate this table of values?**

A y = −2x B y = 2x + 1 C y = x + 1 D y = x2 + 1

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**Vicki works as a salesclerk in a clothing store**

Vicki works as a salesclerk in a clothing store. She earns $10 per hour plus a commission of 6% of her total sales. Which equation represents e, her total earnings when she works h hours and sells a total of d dollars in merchandise? A e = 10h d B e = 10h + 0.6d C e = 6h + 10d D e = 0.06h + 10d

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**Troy borrowed money from his father so that he could buy a used car.**

The table shows the remaining balance, b, of Troy’s loan after each payment. Which function can be used to describe this relationship? A b = p B b = 4135 − 225p C b = p D b = 3685 − 225p

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The height, h, of a football when kicked with respect to time, t, is described by the function h = −16t2 + 48t. Which graph shows the correct sketch of this function? A B

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**Jake studied the parabola shown below.**

Which is an accurate conclusion that Jake could make about this parabola? A The vertex is at (−2, 0). B The minimum value is at (0, −4). C The maximum value is at (2, 0). D The axis of symmetry is the x-axis.

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**Which of the following represents the parent function of y = x2 − 2x − 15?**

A y = x B y = x2 − 15 C y = x2 D y = −2x

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Which of the following are the domain and range for the graph shown below? A 0 ≤ x ≤ 4 0 ≤ y < 36 B 0 ≤ x ≤ ≤ y ≤ 3.5 C 0.5 < x < < y < 36 D 0.5 ≤ x ≤ ≤ y ≤ 36

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**Which statement is true for the graph below?**

A Ms. Goodlett will earn $500 if she sells $5000 worth of merchandise. B Mr. Murphy will not earn any money if he does not sell any merchandise. C Mr. Lefeber will earn $1000 if he sells $1000 worth of merchandise. D Ms. Cho will earn $700 if she sells $5000 worth of merchandise.

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**Which equation best represents the area, A, of the rectangle below?**

A A = 2x + 2(x + c) B A = x2 + (x + c)2 C A = x(x + c) D A = 2x(x + c) x x + c

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