You have an initial amount of $45 in a savings account and you deposit an equal amount into the account each week. After 5 weeks the account holds $105. Write a

Question

n equation that represents the number yy of gallons of water in the tub after x minutes.   sorry about that 

Answer 1

Usually it is difficult to solve a problem if the question ends in mid-sentence. 

 

But if they're asking you to find out what the increments added each week were, and assuming there's no interest being earned, then you start with $45, and each week we add some amount "x" to the account. The amount is the same each week, so after 5 weeks we have added 5x dollars to the account. The total amount, we are told, ended up being $105. This means that: 

 

$45 +5x=$105

 

5x = $105-$45 

 

5x = $60 

 

x = 12$ 

 

So every week we must have added $12 to the account.