Answer:
Well it obviously is obtuse, so the answer is definitely more than 90°, because the angle has an outward slant. I hope this helps! Let me know if it doesn't make sense, I willl explain it more :)
Step-by-step explanation:
For this case we must raise an inequality.
We have "d" dollars initially and they are spent 12. Then:

At least 51 dollars remain, then, the sign of inequality is greater or equal in favor of the expression
, that is:

Resolving:

There are at least 63 dollars left in the account.
Answer:

3 different ways since there are 3 switches
Answer:
Cant see the full photo {error}
Answer: 214.28
Step-by-step explanation: