I forgot but I used to know this one
1200 (1+.8 * 30/12) = 1740.00
1740.00 - 1200 = $540
Answer:
The value of x will be 8
Step-by-step explanation:
We have given that 
We have to find the value of x
As 
For finding the value of x we have to square both side
On squaring both side
We done squaring both side for easy simplification

So x = 8
So the value of x will be 8
So answer will be 8