Solve the following system of equations for all three variables. −
x
+
2
y
+
z
=
−x+2y+z=

0
0
−
x
+
2
y
+
3
z
=
−x+2y+3z=

0
0
x
−
5
y
−
2
z
=
x−5y−2z=

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%