BrainIsAsEmptyAsMe BrainIsAsEmptyAsMe 12-04-2022 Mathematics contestada Sierra had 136 trading cards. She gave away 15 to each of her 3 friends. Which expression shows how many cards Sierra has left? A. 136 - ( 15 x 3 ) B. 136+ ( 15 x 3 ) C. ( 136 - 15 ) x 3 D. ( 136 + 15 ) x 3