B.cm squared
Wrapping paper around a box suggest that it is covering the surface area of the box.Thus,the surface area is measured in cm squared.
Answer: 6 years old.
Step-by-step explanation:
For this exercise let "x" represents your present age.
According to the information provided in the exercise, you know that In three years, Chad will be three times your present age.
Then, your age in three years can be represented with the following expression:

Knowing at that time Chad's age will be three times yours and you will be half as old as old as Chad, you can write the following equation to represent this situation:

Therefore, the final step is to solve for "x" in order to find its value.
You get that this is:

For each, it's easier to find what one item costs.
$6 for 3 = 6 divide by 3 = $2 per item
$9 for 6 = 9 divide by 6 = $1.50 per item
$10 for 8 = 10 divide by 8 = $1.25 per item
$1.40 per item
The best deal for lowest price per item is the $10 for 8
The answer is 12.1, add both 4.5 and 7.6 and you get 12.1
We can't tell from the information you've given.
With the dots at the end, you showed that there's more
to the decimal. But you didn't say how much more.
-- If the decimal EVER ends, even after a billion places,
then it's rational.
-- If it repeats, then it's rational. That .80012569923 may repeat,
or part of it, like the 9923, may repeat, or the whole thing may be
part of some larger bunch that repeats. We don't know.