8-3 Solve It!
There are
rectangles within
rectangles here!
A park has a rectangular dog run with length 30 ft
and width 20 ft. The parks department wants to
expand each end of each side of the dog run by
the same amount x. What will be the total area of
the expanded dog run? Justify your reasoning.
x
x
x
x
20 ft
30 ft
x
x
x
x
8-3 Lesson Quiz
1. What is the simplified form of (x 1 1)(3x 2 2)?
2. What is the simplified form of (2x 1 3)(x 2 5)?
3. What is the simplified form of (x 2 4)(3x 1 1)?
4. Do you Understand? Write an expression for the area of the
rectangle below.
3x 4
7x 2
5. What is the simplified form of (x2 1 5x 2 6)(x 2 2)?
Answers
Solve It!
Lesson Quiz
0486_hsm11a1se_0803.indd 486
4x2
1 100x 1 600;
explanations may vary.
1/27/09 6:48:34 PM
1.
3x2
1x22
2.
2x2
2 7x 2 15
3.
3x2
2 11x 2 4
4.
21x2
1 22x 2 8
5. x3 1 3x2 2 16x 1 12
Prentice Hall Algebra 1 • Solve It/Lesson Quiz on Transparencies
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