Why is a building called a building if it is ready built?

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 word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18