Answer:
n = 20.
Step-by-step explanation:
The external angles of a polygon add up to 360 degrees. So:
30 + 42 + 16(n - 2) = 360 where n is the number of sides of the polygon.
16n + 30 + 42 - 32 = 360
16n + 40 = 360
16n = 320
n = 20.
2040. 10 times 4 is 40. If it happens every ten years then when the Olympics happen 10 times it would be 2040.
You could round 77 to 80 and 65 to 70 and then add 70 and 80 and you will get 150
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100% markup means the price is double what it was bought for, $30. 30x2=60 dollar sale price. A 20% commision would be $12. 60 x 0.2=12
