A picture frame has a white mat surrounding the picture The frame has a width

# A picture frame has a white mat surrounding the

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9.A picture frame has a white mat surrounding the picture. The frame has a width of 27 cm and a length of 36 cm. The mat is 2 cm wider at the top and bottom than it is on the sides. The area of the mat is: A. -4x2+ 118x + 108C.-2x2+ 59x + 54D.5x2+ 80x + 92 B. 4x 2 + 120x + 104 Polynomials Practice Exam 10.The greatest common factor of πr2and πrs is: B. π rs 11.The factored form of -4x2+ 24x is: B. 4x(x - 6) 12.The factored form of -xy3- x2y2is: B. -xy(y + x) 13.The factored form of 5ax - 15a - 3x + 9 is: A. (x - 3)(5a + 3)C.(x + 3)(5a - 3)D.(x + 3)(5a + 3) B. (x - 3)(5a - 3) 14.A pencil can be thought of as a cylinder topped by a cone.A factored expression for the external surface area is: B. π r 2 (r + h + s) r r h s SA Cone = π r 2 + πrs SA Cylinder = 2 π r 2 + 2 πrh From Formula Sheet: Hint: The top of the cylinder (and the bottom of the cone) are internal to the pencil and do not contribute to the surface area. Polynomials Practice Exam   #### You've reached the end of your free preview.

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• Winter '19
• jane smith
• math 10C, C Expanding Polynomials
• • • 