(x-3)(x+1) is your answer
Refer to the figure shown below.
Quadrilaterals ABCD and EFGH are similar.
The shortest side (the 4th side) of quadrilateral ABCD is AD = x.
The three longest sides are
AB = 24, BC = 16 and CD = 12 feet.
The corresponding shortest sides of quadrilateral EFGH are
EH = 9, and GH = 18 feet.
Because the two quadrilaterals are similar, therefore

Answer: The length of the 4th side of quad ABCD is 6 feet.
Answer:
You said the answer yourself. Look
Step-by-step explanation:
“The population of the small town is 4×10^4“
Question: “What is the approximate population of the small town?”
4x10^4 = 40000
For cylinder
SA=2hpir+2pir^2
r=4
h=8
SA=2*8*pi*4+2*pi*4^2
SA=64pi+32pi
SA=96pi
SA≈301.44in²
for 1500 boxes
times 1500
452160 in²
divide by 144 to convert to squaer feet
3140 square feet
aprox is 310.44 square inches
amount needed total is 3140 square feet (for 1500 boxes)