Find the slope of a line parallel to each given line

Ineed i been stuck on this question since yesterday

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

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.