MATH 106 Quiz 2 Answers
1. – 2. Solve for the variable. Check your answer in the original equation, if you determine the equation has a single solution. For full credit, please show all work, including check step!
1. 3 − 5(6 − 2 ) = 4( − 8) + 3
2.
3. Solve the linear inequality. Write your solution set in interval notation and graph it on a number line. If you are typing the exam, you can easily create a number line and graph inequalities using your keyboard. “How-to” link is in Content > Table of Contents > Course Resources > Webliography in our LEO classroom.
–2 ≤ 3x+1 < 10
4. Roy is selling his car through a broker. Roy wants to get $3000 for himself, but the broker but the gets 10% of the selling price as commission. What should the selling price be?
5. State the intercepts of the line with equation 2x + 3y = 30. Both intercepts should be stated as ordered pairs.
6. Multiple Choice: Find the equation of the line passing through (– 5, 6) and (2, 3):
7. Multiple Choice: Find the equation of the line parallel to
8. Solve the system of equations using substitution or elimination by addition (your choice). You MUST show all your work to get credit for this problem!
9. As chief financial officer at Apocalyptic Fitness Supply, you track costs and revenue for the daily manufacturing process for your company’s top-selling product, the SpineCrusherTM unstoppable elliptical trainer. Daily production costs $12,000 plus $15 for every unit produced. Daily revenue coming in equates to $18 per unit sold, minus flat daily rate of $6000.
10. The following table lists the percentage of US Firearms Purchase/Transfer Applications Rejected Due to Background Check Information, 1990 – 2010 [Source: US Department of Justice, Bureau of Justice Statistics, quoted in University of Albany Sourcebook of Criminal Justice Statistics Online , 2011 (www.albany.edu)]
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