I hope this helps you
3y-2=y+4
2y=6
y=3
Perimeter=4+6+7
Perimeter=17
Answer:

Step-by-step explanation:
<u>Find the volume of separate cuboids</u> :
<u>Volume (top cuboid)</u> :
⇒ V = 2 x 6 x (10 - 2)
⇒ V = 12 x 8
⇒ V = 96 cm²
<u>Volume (lower cuboid)</u> :
⇒ V = 8 x 6 x 2
⇒ V = 48 x 2
⇒ V = 96 cm²
<u>Volume (prism)</u> :
⇒ 96 + 96
⇒ 192 cm²
Let x be number of T-Shirts made.
Therefore,
Revenues from the sell = 12*x = 12x
The cost making them = 20+(8*x) = 20+8x
Profits = 12x-(20+8x) = 12x -20-8x = 4x - 20
Now, this profit should be atleast $100. Then,
100<4x-20 => 100+20<4x => 120<4x => 120/4<x => x>30
Therefore, more than 30 T-shirts should be made in order to make atlease $100 profit.
The answer would be ×>5 because when u divide by a negative the sign will switch.