CBA #9 Review - Part 2 Polynomials

Which of the following is equivalent to the expression (2x² + 6x + 5) - (6x² + 3x + 5)?

• 4x² - 3x

• -4x² + 3x

• -4x² - 3x + 10

• 4x² + 3x - 10

A shoe company is going to close one of its two stores and combine all the inventory from both stores. These polynomials represent the inventory in each store:

Which expression represents the combined inventory of the two stores?

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Which expression is equivalent to

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The diagram shows the floor plan of a storage facility. All dimensions are given in feet. Which expression represents the area of the storage facility in square feet?

• 20x² + 36x – 16

• 20x² – 4x – 16

• 16x² – 16

• 9x² – 16

Simplify:

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If x ≠ 0, what is the result if 12x² – 3x is divided by 3x?

• 3x

• 4x

• 4x – 3

• 4x – 1

What is the quotient of 5x² +18x – 8 and x + 4?

• 5x – 4

• 5x – 2

• 5x + 4

• 5x + 2

Which graph best represents y = -4(x + 3) - 2?

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A paper airplane was thrown from the top of a tall building. The height of the paper airplane above the ground can be found using the function y = -1.5x + 60, where x is the time in seconds the airplane has been in the air. How many seconds did it take the paper airplane to reach the ground?

A student worked out at a gym continuously for 50 minutes. The graph shows the remaining percentage of the workout as a linear function of x, the time in minutes.

Which answer choice best describes the domain and range of the function for this situation?

• Domain: All real numbers greater than or equal to 0 and less than or equal to 100 Range: All real numbers greater than or equal to 0 and less than or equal to 50

• Domain: {-2}

  Range: {100}

• Domain: All real numbers greater than or equal to 0 and less than or equal to 50 Range: All real numbers greater than or equal to 0 and less than or equal to 100

• Domain: {100}

  Range: {-2}