You had the right idea with the lools because the first step is counting 0s in the number. The format of scientific notation is: [number 1-10] × 10 to the [however many places it takes to get it to number 1-10]. The power will be negative if your number is a decimal (like the one you have here). Hope this helped, please ask me questions if confused
The answer is 2 and a half. Because 18 + 6 + 6 + 3 is 33. This is because $18 to get in then $6 for one hour another $6 for an hour and $3 for an half hour.
