What is the length of a 135 arc

How can you use synthetic substitution to tell whether a given binomial is a factor of a polynomial?

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.

What is the measure of ba (the minor arc) in the diagram below?