Mr. Augustine invests $200 quarterly for 2 years at 3%/a compounded quarterly. a) How much will he have at the end of 2 years? b) How much interest did he earn? a) $1642.64; b) $42.64 a) $2198.01; b) 129.12 a) $672.12: b) $12.81 a) 1999.21 ; b) 99.12