SAT-style/PreCal math questions help!?

Euphy

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I need some help on two questions. I'd also like an explanation as to how to find the answer. Thanks!!

1.) The sum of two positive consecutive integers is X. In terms of x, what is the value of the smaller of these two integers?
a.) x/2-1 b.) x-1/2 c.) x/2 d.) x+1/2 e.) x/2 +1

2.) What is the domain and range of y=?3x-5
 
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