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Key Concepts Quiz 3.7
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Use the document below to help answer the questions:


1
Find the length and width of the area model shown.
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A)x, x + 1
B)x, 2x + 1
C)2x, 2x + 1
D)2x, x + 1
2
Find the area of the model in question #1.
A)4x2 + 2x
B)2x2 + x
C)4x + 2
D)2x + 2
3
Expand 4y(3y – 1).
A)12y – 4
B)12y2 – 4y
C)12y2 – y
D)4y2 – 4y
4
Expand 2(5p – 3) + 3(2p + 1).
A)4p – 3
B)4p + 9
C)16p + 3
D)16p – 3
5
Expand 2[3 + 4(5z – 1)].
A)20z – 1
B)40z – 2
C)40z – 1
D)40z +7
6
The Classic Ratio Window Company makes all of its windows such that the width is x cm and the length is 2x + 30 cm. An expression for the area of such a window is
A)x2 + 30x
B)31x
C)2x2 + 30x
D)31x2





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