Answer:
[4, positive infinity]
Step-by-step explanation:
since f(4) exists, the interval starts at 4, and continues to infinity.
We will have that for the previous year, he had in the account:

For the year previous to that one, he had:

For the previous year to that, he had:

For the year previous to that one, he had:

For the second year that the money was in the account, there was:

And the orinial ammount of money that was in the account was:

From this, we know that Jhon had originally $1400.37 in the bank account.
Answer:
21
Step-by-step explanation:
I agree with you because theta could be acute or obtuse, and if obtuse, negative value.