What is my GPA total.?

English 10 – C
World History – B
GT Geometry – E (GT is a magnet class higher than honors class)
Biology – B
Principles of Business Administration Management – B
Computer Science – B ( GT class)
Weight Training I – B
Engineering & Technology Concepts – B
*GT means Gifted and Talented
i live in Maryland, USA
here is the grading system letters in my school

Standard Class : A=4, B=3, C=2, D=1, E=0
Gifted And Talented Class : A=6, B=4, C=3, D=1, E=0
*Units of Credits – Current Year 7.0, Cumulative 16.0
*Achievement Factor(Average Quality Points)- Current Year 2.75, Cumulative 2.59