Answer:
Original size of population containing fruit files = 10 files
Rate at which population of fruit file is increasing = 22.5%
New population of fruit files having initial population of 10 files and increase rate of 22.5% is given by =
10 + 22.5 × 
= 10 + 22.5 × 
= 10+ 2.25
= 12.25 files
Try this solution:dy/dx=y⁴cosx; y⁻⁴dy=cosxdx;

<span>By the Pythagorean theorem:
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