Aiming for graduate school in applied math with weak math grades
Your situation might be better than you expect. I'm in a math Ph.D. program with many faculties doing applied math research. My overall undergraduate GPA and math GPA were both worse than yours for similar reasons(e.g. a C+ in honor real analysis). In addition I have other unfavorable factors in my applications.

In the end you'll have to decide what programs to apply, here I assume you want to get into math/applied math program and you are concerned about your grade.

One of the reasons people look at your grade is to make sure you can pass through the coursework/qualifying stage of the graduate program. That is, they don't want to admit many students that will eventually drop out by failing too many courses or qualifying exams. To convince them you can do well in that part, you should


Get high subject GRE grade.
If your low math grade is on early stage and you do better after that(e.g. I got C+ in my first real analysis and A in my second real analysis course) then in SOP mention you understand the importance of those core courses and you work hard to make up the deficiency early on.
Related to 2. but more important, for any program you apply, take a look at all their requirements to graduate, and think about how you convince professors you will be able to finish those requirements.