Given:
Brooke is saving money
she puts $150 into a savings account
The interest = r = 7.25% = 0.0725
Compounded quarterly, n = 4
We will find the balance after 4 years
So, t = 4
We will use the following formula:

Substitute and simplify

Compare the result with the cost to Bahamas ($295.99)
So, it will be less than the cost
so, the answer will be
After 4 years, she will not have enough money.