
The fixed cost is $150, while the per-student cost is $6.
Answer of what is the length is 12. if we add all the sides it has to come as 36,so if length=x then width=2x therefore X+X+2X+2X=36 therefore x=6 then width=2x =12.
You may have have forgotten to find the measure of A. Which would by using your 6 that you got would be 19.
16X-6=90
96=16X
X=6
8X6-29
48-29
19
3 is in the tens and 1 is in the ones. To explain more easily... 30+1 is 31.<span />