Answer:
One Solution:

Infinitely Many Solution:

No Solution:

Step-by-step explanation:
System 1


Hence only one solution 
System 2

Both represents the same line. Hence these have infinitely many solutions.
System 3

Compare both the lines with
, where m is the slope.
for both the lines.
Hence these two lines are parallel that means there does not exists any point of intersection
So this system will not have any solution.
Your equation is gonna be
4.5a + 2.5b = 4.25
I forgot how lol but you gotta now solve for A and B.
Answer:
I think 5 is right and the slope is either -1/2 or -2/1
Answer:
whats the question?
Step-by-step explanation:
Apparently, Katie's net sales were $5859 -422 = $5437. Her commission on those sales was 0.05*$5437 = $271.85.
Katie earned $271.85.