Do the derivation of the notations using the logic 2010 program

(1)p--> (q --> r). p--> (r--> s) therefore p --> (q --> s)

(2) p --> q --> ~r). q therefore, p --> ~r

(3) ~(r --> q). q. therefore p

(4) p --> (q --> r). p --> (r --> s). therefore p --> (q --> s)

(5) (p --> q) --> r. ~r. therefore ~ q

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

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it is x equals 3   plese mark me really need it

step-by-step explanation:

answer. d.289 hope that