The average ocean depth is 3.7 × 103 m, and the area of the oceans is 3.6 × 1014 m2. What is the total volume of the ocean in liters? (One cubic meter contains 1000 liters. Round your answer to one decimal place.)
For some of these, a calculator is helpul.
The sum is 294903.
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This is the sum of 15 terms of a geometric sequence with first term 9 and common ratio 2. That sum is given by the formula

3 times +2 >-42 so do the math too that
If you are solving for x then the answer should be x=-47,M<2 . If you are solving for M then the answer is most likely M<2,x=-47