Answer:
21n=
n-number and since its a number (n) and 21 you would put 21n
Okay, so you need at least $100 in your account to avoid the fee.
You currently have $247.
And you also take out $20, every week.
So first, work out the maximum amount of money you can take out before reaching the limit. (247 - 100 = 147).
Now that we know you can take out $147 max, you just need to divide it by $20, because that's how much you take out every week. (147 ÷ 20 = 7.35 weeks.) But of course, the question is asking for the answer in weeks, so you round the answer down to 7 weeks.
You can last 7 weeks by taking out $20 every week from your $247 balance to avoid the low balance fee.
Question 1 240/45=5.333333333333
