Adding And Subtracting Polynomials Page 2

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7. Jack is stacking his toy blocks. The red block has a volume of 2x

+ 3x − 1 cubic inches, the

yellow has a volume of x

+ 12 cubic inches, and the blue has a volume of 5x − 2 cubic inches.

If he builds a tower using 2 red blocks, 1 yellow block, and three blue blocks, what is the

total volume of his tower?

8. Find the g(x) less than f(x) if f(x) = 3x

+ x − 7 and g(x) = −x

+ 5x − 2 .

9. A new home has a floor plan as show. What is the area of the house?

Á Á

˜ ˜

−2

Á Á

˜ ˜

10.

Á Á

˜ ˜

Á Á

˜ ˜

3ab

−2

11. (−3c

)

12. A rectangle has an area of 20x

square yards. If its width if 3xy

yards, what is its length?

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