College Algebra Unit I Practice Exam Worksheet With Answer Key Page 9
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12The following problems will be graded based on HOW MUCH WORK YOU SHOW. No work = No credit. If you use
your calculator to solve these questions, you must write down your preliminary work and sketch any graphs used to
answer the question.
Solve for x.
41) -4[3x + 7 + 3(x + 1)] = -7x - 5
41)
x
x
42)
42)
- 3 =
- 1
6
8
Find an equation for the line with the given properties.
43) The solid line L contains the point (3, 4) and is perpendicular to the dotted line whose
43)
equation is y = 2x. Give the equation of line L in slope-intercept form.
44) Find the equation of the line passing through (5, 2) and parallel to the line whose equation is
44)
6x + y - 6 = 0. Write your solution in slope-intercept form
Perform the indicated operation nd write the result in standard form.
45) (8 - 6i)(-5 - 4i)
45)
10i
46)
46)
3 + i
47) (3 + 4i)(3 - i) - (2 - i)(2 + i)
47)
48)
48)
Find all real and complex solutions to
2x 2 + 6x + 3 = 0
49) x 2 + 5x + 5 = 0
49)
50) 4x 2 + 5x + 7 = 0
50)
51) A square sheet of paper measures 45 centimeters on each side. Using the Pythagorean
51)
Theorem, determine the length of the diagonal of the square sheet of paper.
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