10 math questions. Must show all work. The questions are attached below. Thank you!

Please remember to show ALL of your work on every problem.
Write the augmented matrix for the system. Do not solve the system.
1) 7x - 2y = 36
8x + 9y = 75 Use the Gauss-Jordan elimination method to solve the system of equations.
2) -2x - 7y = -5
-8x - 28y = 4 Use the Gauss-Jordan elimination method to solve the system of equations.
3) -6x + 6y = -36
3x - 3y = 18 Use the Gauss-Jordan elimination method to solve the system of equations.
4) 2x + 5y = -7
-6x - 15y = 21 For the following problem, set up the augmented matrix that describes the situation, and
solve for the
desired solution.
5) John has a jarful of quarters and nickels. There are 104 coins in the jar. The value of the coins
is $16.60. How many of each type of coin are there? Graph the inequality and show (shade in) solution region.
6) 2y < - 4 Graph the inequality and show (shade in) solution region.
7) x + 2y ≥ 6 Graph the inequality and show (shade in) solution region.
8) -2y + 4x ≤ 8 Graph the system of inequalities. Show (by shading in) the feasible region.
9) – x – y < 5 , x < 2y Graph the system of inequalities. Show (by shading in) the feasible region. Identify the
ordered-pair “corner points” that define the feasible region.
10) 3x + y ≥ 6, x + 2y ≥ 7, x ≥ 0, y ≥ 0

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