<PRE><B>Question 983059</B>
.
c=chairs per row; r=number of rows
.
c=2r-3
.
(c)(r)=54
(2r-3)(r)=54
2r^2-3r=54
2r^2-3r-54=0
(2r+9)(r-6)=0
2r+9=0 OR r-6=0
r=-4.5 OR r=6
ANSWER 1: There are 6 rows (-4.5 makes no sense)
.
c=2r-3
c=2(6)-3=12-3=9
ANSWER 2: There are 9 chairs per row
.
CHECK:
(6 rows)(9 chairs/row)=54 chairs
54 chairs=54 chairs</PRE>