What is the equivalent decimal for 4/45

a) 0.23

b) 0.09

c) 0.1

d 0.1

( the first 3 answers are recurring decimals )

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.