Answer:
4,260 feet below sea level (-4,260 feet)
Step-by-step explanation:
The submarine starts at sea level which should be 0 for elevation. And descending 7 feet per second for 2 minutes which means it went down 840 feet ( 7x60x2). Then 4 feet per second for 3 minutes which is 720 feet (4x60x3). Lastly 9 feet per second for 5 minutes which is 2,700 feet (9x60x5). Then you add up those three totals, 840 + 720 + 2,700 = 4,260. So the elevation is -4,260 feet, or 4,260 feet below sea level
I think the answer is c because it is a even number and the answer can also be a but i think it is c
The approximate volume of the model will be

<h3 /><h3>What is the approximate volume of the model? </h3>
It is given that


So the volume of the model will be =



Thus the approximate volume of the model will be 
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Multiply each term by 8 ( to get rid of the fractions)
we get:-
-72 = -16 - k
k = -16 + 72 = 56 answer
The diagonals intersect perpendicularly, two consecutive angled are supplementary, and that opposite angles are equal