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A quantity P varies partly as the square of M and partly as N. When P=3.8,M=2, and N=-3 when P=-0.2,M=3 and N=2.
a)Find
1) The equation connecting P,M and N
2) The value of P when M=10 and N=4
b) Express M in the terms of P and N
c)If P and N are each increased by 10%, find the percentage increase in M correct to 2 decimal places.

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