Answer: 3
Step-by-step explanation:
Let say x the width of the tank,
x+4 its length,
x+2 its height
![Volume=105=x(x+4)(x+2)\\\\P(x)=x^3+6x^2+8x-105=0\\\\105=3*5*7\\\\P(1)\neq 0\\P(-1)\neq 0\\P(3)=0\\\\\begin{array}{|c|cccc|}&x^3&x^2&x&1\\&1&6&8&-105\\x=3&&3&27&105\\----&--&--&--&--\\&1&9&35&0\\\end{array}\\\\\\P(x)=x^3+6x^2+8x-105=(x-3)(x^2+9x+35)\\And \ x^2+9x+35\ is\ not \ factorizable\ (\Delat=9^2-4*35 < 0)\\](https://tex.z-dn.net/?f=Volume%3D105%3Dx%28x%2B4%29%28x%2B2%29%5C%5C%5C%5CP%28x%29%3Dx%5E3%2B6x%5E2%2B8x-105%3D0%5C%5C%5C%5C105%3D3%2A5%2A7%5C%5C%5C%5CP%281%29%5Cneq%200%5C%5CP%28-1%29%5Cneq%200%5C%5CP%283%29%3D0%5C%5C%5C%5C%5Cbegin%7Barray%7D%7B%7Cc%7Ccccc%7C%7D%26x%5E3%26x%5E2%26x%261%5C%5C%261%266%268%26-105%5C%5Cx%3D3%26%263%2627%26105%5C%5C----%26--%26--%26--%26--%5C%5C%261%269%2635%260%5C%5C%5Cend%7Barray%7D%5C%5C%5C%5C%5C%5CP%28x%29%3Dx%5E3%2B6x%5E2%2B8x-105%3D%28x-3%29%28x%5E2%2B9x%2B35%29%5C%5CAnd%20%5C%20x%5E2%2B9x%2B35%5C%20is%5C%20not%20%5C%20factorizable%5C%20%28%5CDelat%3D9%5E2-4%2A35%20%3C%200%29%5C%5C)
<u>width=3</u>
length=3+4=7
height=3+2=5
Answer:
see the attachment
Step-by-step explanation:
If the growth is 7 feet in 2 weeks and the rate is constant, then it will be half that in one week, or 3.5 feet per week. At week 3, it will be 3.5 feet more than at week 2. The table below shows this progression.
The point (0, 0) means there was no measurable growth when time was starting to be measured (at week 0).
Whaaaaa——t i dont understand too