Hey there!!
Given :-
... c² - 4c = 0
... c ( c - 4 ) = 0
... c - 4 = 0
... c = 4
<em>The value of c is '4'. </em>
Hope my answer helps!!
Local Calls = 36
Distance calls = 20
Ratio would be: = 36/20 = 18/10 = 9/5
In short, Your Answer would be Option A
Hope this helps!
Answer:B
Step-by-step explanation: