Myra is evaluating the expression –31.7 + 4.5x, when x = 2.1. –31.7 + 4.5(2.1) = –27.2(2.1) = –57.12 what was myra’s error? a. myra should have multiplied -31.7 and 2.1 first. b. myra should have multiplied 4.5 and 2.1 first. c. myra should have subtracted -27.2 and 2.1 first. d. myra should have added -31.7 and 2.1 first.