Answer:

Therefore, option C is correct.
Step-by-step explanation:
We have been given the equation:

We will take LCM 4 on right hand side of the above equation:

Now, we will multiply the 4 in denominator on right hand side to the y in left hand side pof the equation we get:

After rearranging the terms we get:

Therefore, option C is correct.
Answer:
x-4=19
Step-by-step explanation:
Hope that helps!
Answer:
x = 399 new subscribers
Step-by-step explanation:
Let 420 = 100%
x = 95%
420*95 = 100x
x = 420*95/100
x = 399 new subscribers
The formula of a perimeter is:2(L+l) or
2*L+2*l