Answer:
The answer is 48
Explanation:
At the time of 0 there are 25 views are exist for a reader board. If the growing rate is %18 than;

There is no 0,5 view is exist than we need to round up to 30. 30 views for a reader board are exist. Than we need to repeat it for future three weeks.

Second week its 35

Third week its 41

Forth week it goes up to 48 views.