Step-by-step explanation:
Given that:-
So, we can concert 15 minutes to hours.
So,
60 minutes = 1 hour
1 minute = 1/60
15 minutes =

Okay, now we will apply first for 0.4 hours.





Now, second one:-



Hope it helps :D
Answer:
a = 5 or a = -5
Step-by-step explanation:
None of them will get into a negative number. When you have like "2x" is the number twice, right? Some number has to be negative
(20)(7) = 140 hours per week
(20)(365) = 7300 hours per year