I need help plz :( i will give brainlist
1 answer:
You might be interested in
Answer:
The number of service calls made = 55
Step-by-step explanation:
Let the total number of installations made by the company = x
Let the total number of service calls = y
Total number of invoices for the month = 69
=> -------------------(1)
Total amount of the invoices = $6975
=> -----------(2)
From (1),
Substituting in (2):
=>
=>
=>
=>
=>