An invoice dated 20th September 2018 for RM3150 was offered cash discount term 10/20,5/25 and n/30. Find the last date to settle the invoice if the retailer want to get 5% discount. Select one: O A. 15th October 2018 OB. 16th October 2018 C. 14th October 2018 le D. 17th October 2018 Given f(x) = 8x - Ex + 6x2 - x =). Find the f (7). 19