3/4 = x / 340....3 to 4 students = x to 340 students
cross multiply
(4)(x) = (3)(340)
4x = 1020
x = 1020/4
x = 255 <==
or this way.....
3 out of 4 students.....3/4 = 75%
so 75% of 340 = 0.75(340) = 255 <=
<h2><em>= 2(x-3) + 2(7x+1) </em></h2><h2><em>since there are 4 sides, 2 which have the same dimensions
</em></h2><h2><em>
</em></h2><h2><em>= 2x - 6 + 14x + 1 </em></h2><h2><em>= 16x - 5</em></h2><h2><em /></h2><h2><em>HOPE IT HELPS (◕‿◕✿) </em></h2><h2><em>SMILE!!
</em></h2><h2><em /></h2>
Given

:

, which is the second expression

, which is the first second expression

, which is the fourth expression

, which is the third expression