9.10: Chapter 9 Test
Difficulty Level: At Grade
Created by: CK12
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Simplify the following expressions.

(4x2+5x+1)−(2x2−x−3) 
(2x+5)−(x2+3x−4) 
(b+4c)+(6b+2c+3d) 
(5x2+3x+3)+(3x2−6x+4) 
(3x+4)(x−5) 
(9x2+2)(x−3) 
(4x+3)(8x2+2x+7)
Factor the following expressions.

27x2−18x+3 
9n2−100 
648x2−32 
81p2−90p+25 
6x2−35x+49
Solve the following problems.
 A rectangle has sides of
x+7 andx−5 . What value ofx gives an area of 45?  The product of two positive numbers is 40. Find the two numbers if one of the numbers is 6 more than the other.
 Give an example of two independent events. Determine the probability of each event. Use it to find:

P(A∪B) 
P(A∩B)

 The probability it will rain on any given day in Seattle is 45%. Find the probability that:
 It will rain three days in a row.
 It will rain one day, not the next, and rain again on the third day.
Texas Instruments Resources
In the CK12 Texas Instruments Algebra I FlexBook® resource, there are graphing calculator activities designed to supplement the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9619.
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Date Created:
Feb 22, 2012
Last Modified:
Sep 07, 2016
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