Auestion is in the picture, 10 points!

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.

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

What is the simplified form of square root of 400 to the 100th power ?