Question 4 | GED Math Practice Test 1 Question 4 of 25 16 % CompleteSimplify and combine like terms of the following expression: 3(2a+1) + 4aA. 2a+1+12a B. 6a+3+4a C. 10a+3 D. 7a+8a2 Click to Show AnswerC. 10a+3