Please help i don't understand what this means ahh

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.

Tan198=asin164=? how to solve this? ?

Graph the function =gx+2x3 and give its domain and range using interval notation.