JHINGBICOCREUS9519GO JHINGBICOCREUS9519GO Math Answered 1. a1 = 11 and d = 72. a1 = 18 and d = 93. a1 = −7 and d = 44. a1 = −8 and d = 55. a1 = 14 and d = −96. a1 = −3 and d = −3