Since she makes four payments each year, the total amount she pays in a year is
[tex]\$175\times4=\$700[/tex]Now there are 52 weeks in a year, divide the total amount of what she pays in a year by the number of weeks in a year.
[tex]\$700\div52=\$13.46[/tex]Therefore, she must budget weekly $13.46 to cover for this fixed expense.