+ 4 + 9 + 16 + 25 + 36 + 49 + 64 + 81 = 285

March 11, 2026

+ 4 + 9 + 16 + 25 + 36 + 49 + 64 + 81 = 285

**Why 285

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#### 801. A train travels 150 miles in 3 hours at a constant speed. It then travels another 200 miles at a speed that is 20% faster than its initial speed. How long does the entire journey take?
#### 17,138.20Question: A paleobotanist has 48 fossilized plant species and 64 ancient pollen samples. What is the greatest common factor of these two numbers?
$$ f(a + b) + f(ab) = f(a)f(b) + ab $$
+ 1.5 + 2.25 + 3.375 + 5.0625 = 13.1875
+ 2.5 + 6.25 + 15.625 + 39.0625 = 64.4375
= 2(8 imes 5 + 8 imes 10 + 5 imes 10)

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