Please help make 5 examples of Rational Algebraic Expressions

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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