+428 Thirty-one books are arranged from left to right in order of increasing prices. The price of each book differs by $2 from that of each adjacent book. The price of the book at the extreme right is equal to the price of the middle book plus a book adjacent to the middle one. Give an expression for the cost of the th book in terms of .
+592 X=lowest number
extreme right=x+60
middle = x+30
x+60=x+30+x+32
or
x+60=x+30+x+28
