Answer:
40/129
Step-by-step explanation:
30 Red + 40 Blue + 59 White = 129 marbles
40 blue / 129 marbles is about 31%
If you were rounding the exact answer 'could' be 499,999 or it 'could' be 455,555. But it would be difficult to know the definitive amount, so basically anything above 450,000.
17/15 as a mixed number is 1 2/15. 2 31/18 as a mixed number is 54 13/18.
The multiplier each year is 1.02, so the multiplier for 7 years is 1.02^7.
220,000*1.02^7 ≈ 252,700
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4 significant figures is usually good enough for most real-world problems. (Unless you're counting pennies on your billion-dollar investment.)
Every point is translated according to the rule ( x, y ) → ( x + 2, y - 6 )
L ( -1, 2 ) → L´ ( -1 + 2, 2 - 6 ) = ( 1, -4 )