I’m not sure how your class works, but usually if they are circled it means you only have to do the circled ones. GCF always stands for greatest common factor
4[(8+4)10] + 24 so 8 + 4 is 12. Multiply that by 10 and that's 120. 120 + 24 is 144 144 × 4 is 576 for "devided by 2^3" do you mean divided by 2/3? If so then its 576 ÷ 2/3 = 96