Quiz
MATH106 – 6380
Quiz 3
Directions:
Read and sign the academic honesty certification statement below, then read the questions carefully and answer them to the best of your ability. You may write your answers on this sheet or on the sheet you do your work on, but PLEASE show your work. Answers shown without work will get no credit. Work shown with unclear derivations or key steps missing in the derivations of answers will not lead to full credit (even if the answer is correct). Follow directions as outlined in Quizzes folder under the “Assignments” link on our LEO classroom NavBar.
The completed quiz that you submit/upload must be contained in one file (Word or .pdf format). Uploaded work in other formats or separated over more than one file will not be accepted.
Test & work is due as specified in “Course Schedule”. I cannot accept any late submissions! This is open-book/notes: calculators, & graphing devices are authorized for use. Good luck!
Express the following system of equations in augmented matrix form:
Express the following augmented matrix form as a system of equations with two variables.
Express the following system of equations in augmented matrix form:
Solve the system of equations represented in augmented matrix form, using Gaussian elimination.
Solve the following system of equations using Gaussian elimination.
Graph the inequality in the given coordinate system, using shading to indicate the solution region.
Graph the inequality in the given coordinate system, using shading to indicate the solution region.
Graph the system of inequalities in the given coordinate system, using shading to indicate the solution region.
Note: In all applications problems, please clearly define all relevant variables, and state the answer in complete sentences, in the context of the question of the problem statement.
At a recent UMUC athletic event, you sold red baseball caps for $12, and gold caps for $15. A total 200 baseball caps were sold, for a total of $2760. How many of each type of cap was sold?
You invested a total of $10,000 in two accounts over a one-year period. One account earned 2.5% interest and the other earned 4% interest. The total interest in the two accounts at the end of the year was $355. How much money was invested in each of the two accounts at the beginning of the year?
11. In how many ways can a student choose to do four questions out of five on a test?
