Please help and explain! I will mark brainliest to correct answer!​

Empty box + box + empty box fill in the box is equal to 30 how

Scott’s bank account showed a balance of $750 on sunday. during the next five days, he made one deposit of $140 and numerous withdrawals of $180 each. let x represent the number of withdrawals that scott made. write an inequality that can be used to find the maximum number of withdrawals that scott could have made and maintain a balance of at least $100. do not use a dollar sign ($) in your response.

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9