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Final

MA129 Study Guide - Final Guide: Liquid Oxygen


Department
Mathematics
Course Code
MA129
Professor
Shane Bauman
Study Guide
Final

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MA129 Mock Midterm
Name:
Time Allowed: 80 minutes
Total Value: 60 marks
Number of Pages: 8
Instructions:
Non-programmable, non-graphing calculators are permitted. No other aids allowed.
Check that your test paper has no missing, blank, or illegible pages. Note that test questions appear
on both sides of the paper.
Answer in the spaces provided.
Show all your work. Insu¢ cient justi…cation will result in a loss of marks.
1. [4 marks]Let A=24 3
1 1 2,B=1 0 2
311and C=2
41 2 0
4 0 2
113
3
5.
Determine each of the following:
(a) 3AB
(b) BC
1

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2. [4 marks]Simplify each of the following expressions.
(a) 2x3y23
(xy4)2
(b) x24
x2+ 3x10 6x23x
x2+ 7x+ 10
3. [5 marks]Solve the following inequality for x. State your answer using interval notation.
2
x3
x2
2
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4. [5 marks]Solve the system of linear equations if it is consistent, or prove that there is no solution if
the system is inconsistent:
x2y+z= 2
4x5z=1
10x+ 4y+ 8z= 4
5. [3 marks]A business-copier repair company charges a …xed amount F, plus an hourly rate Rfor
a service call. A customer is billed $159 for a one-hour service call and $287 for a three-hour service
call. Determine the …xed amount and the hourly rate the company charges for a service call.
3
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