The first one is "unit of account".
The second one is "store of value".
The third one is "medium of exchange".
Step-by-step explanation:
the answer is in the picture above
(84)5 = 420
(73)9 = 657
420 + 657 = 1077
<u>Answer:</u>
D. A = 6n²
<u>Step-by-step explanation:</u>
area of 1 side = n x n = n²
There are 6 sides in a cube.
∴ Total surface area = 6 x n²
A = 6n²