Answer:
All three are rational numbers.
Step-by-step explanation:
I used Desmos (a graphing calculator online) and the roots were all able to be written with fractions.
Given the equation:

since both bases are 6, we can equate both exponents to get the following equation:

solving for x, we get:

therefore, the solution of the equation is x = 4
Given:
39 widgets per seconds
6 widgets to make 1 whoozit
3,500,000 whoozits * 6 widgets/whoozits = 21,000,000 widgets
21,000,000 widgets / 39 widgets/sec = 538,461.54 seconds
1 day = 24 hours
1 hour = 60 minutes
1 minutes = 60 seconds
1 hour = 3600 seconds
3,600 seconds * 24 hrs = 86,400 seconds
538,461.54 seconds / 86,400 seconds per day = 6.23 days.
B. 6 days.