What level of foreign language have you completed?
Some colleges may be satisfied with an AP 5 in a presumed heritage language, but others may prefer to see a non-heritage language learned in school to a high (for high school) level, or a heritage language continued to an even higher level than AP 5 level.
If you do go on the PhD study in math, French, German, or Russian is typically considered a useful foreign language because math research papers may be written in those languages.