Answer: 2 hours 15 minutes
Step-by-step explanation:
3/4 of an hour times 3 will be 9/4; each fourth is 15 minutes. 9 times 15 is 135 minutes, which is 2 hours and 15 minutes
Step-by-step explanation:

5.268 • 10 to the power of 13
( the decimal point would have to move 14 times to the left)