As a math undergrad, an MBA can take you just as far as an EE/CS MS, lateraling to a firm like Kleiner Perkins or 3i, or Atlas w/ that pedigree will have you starting out at 200k+ w/ big bonuses.
Alternatively, first semester of either the MBA or the EE/CS MS program you should be able to start working with the "Big" Silicon Valley companies like Facebook, Google, Apple, IBM, etc. With an easy job offer afterward or work in a Fellowship.
Either way, at your current company you'll be able to fly up in terms of pay.