exam Maths Puzzle Numerical Ability

Find the unit rate.

5. 28 wins/4 seasons

Any help with this equation would be Greatly</b> appreciated.

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exam Other Question

{(x+1)(2x-1)/(2x-3)(x-3)}-{(x-3)(x+1)/(3-x)(3-2x)}+ {(2x+1)(x+3)/(3-2x)(x-3)

The answer I got was... 3x^2+10x+5/2x^2-9x+9

is this correct?

THANK YOU so much for your help!! Find:
sin A if cos A = -(3/5) and 90 degrees < A < 180 degrees