All you do is add them all together...
20 + 11.4 + 11.4 + 4.5 + 4.5 + 0.45 + 0.45 + 0.45 + 0.45 = 53.6Kg
(note that 0.45 is 450g in Kg, When adding things such as weight or length you want to make sure that they are all in the same unit)
It says the elevator's can hold minimum 3000 pounds and how many of a 150 pound box can fit without going over the 3000 pound.
So,
Answer:

Step-by-step explanation:
When you multiply, always start on the first value. In this case, this would be 2 from 72.

![==> 8[tex]and[tex]2 * 1](https://tex.z-dn.net/?f=%3D%3D%3E%208%5Btex%5D%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3Eand%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3E%5Btex%5D2%20%2A%201)

Write now, you should have 82 as your first value.
Now for your second value, which would be 7. But first you need to add a zero, because you are doing the tens place.


<u>Now you put the two over your next equation:</u>
and




Now you should have 980 written.
<u>Now add your two numbers together:</u>
<u></u>


Answer:
y=930 x 075^x
Step-by-step explanation:
y is the price after the amount of years x being plugged into the equation. 930 is what you started with. 7.5 is what is being decreased so divide that by 100 and you get 0.075 plug in the amount of years into x and you have your equation
7, 14, 21, 28, 35, 42, 49, 56, 63