exam Maths Puzzle Numerical Ability

-1and one over four is equal to m+3

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exam Other Question

Driving down a mountain,Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. Explain why the rules of multiplication hold:

-(-) = +
+(+)=+
-(+)=-
+(-)=-