When you're talking about sums, that means you are adding. So, you do 8+7=15. The sum of it being doubled, you say? 15x2=30, or 15+15=30. Hope this helped :)
7.0258 daL is the answer daL stands for deka liters
4 Oranges, 310 divided by 5= 64, 64 times 4=248.
|-9|, |-3.5|, |4.2| is the answer. row 3
