Steven wants to buy a $530 bicycle. steven has no money saved, but will be able to deposit $35 into savings account when he receives his paycheck each friday. however, before steven can buy the bike, he must give his sister $65 that he owes her. for how many weeks will steven need to deposit money into his savings account before he can pay back his sister and buy the bike?

I'm going to write out all of the money he gets each week, and when he has enough to pay back his sister, I will subtract the money he payed her. 

35 5 40 75 110 145 180 215 250 285 220 255 290 325 360 395 430 465 500 535 

Now count how many numbers there are (20), and that's your answer! :)

The answer is 20 

Hopefully this helps! If you have any more questions or don't understand, feel free to DM me, and I'll get back to you ASAP! :)

He will need to deposit money into his account for 17 weeks so he can pay his sister back and buy the bike.

hope that is will help