Answer and Step-by-step explanation:
If you see a number or fraction or anything we g beside it, such as:
4.2g
6g

^ That is grams
If you see anything with kg next to a number, fraction, e.t.c, such as

5kg
6.2kg
^ That is kilograms
<span>A(x) = x 2 - 12x + 36
</span><span>A(x) = (x -6)^2
answer: length of a side of the square = x - 6</span>
3 pounds = 0.003 killograms
Answer: y3/xz
Step by step is provided in the screenshot below
The mistake is line 4, she should have divided 42 by 5, not add 5 and 16