It's a little fuzzy to read, but I'll try my best.
Difference is subtraction, so you measure how big both squares are and subtract them for the difference. As for the median, I think it'd be the line in the middle of both squares.
As for the box-a-whisker, I don't exactly understand.
Answer:

Step-by-step explanation:
We want to factor the common monomial out of :

The greatest common monomial fact is

We factor to get:

The expression in the parenthesis has no common factor again since we factored the greatest common factor.
Answer:
Just put the greatest number first and then the second greatest etc
If the question is asking to multiply by the variables, it would be 3(-2)+5(-1) which is equal to -6 - 5.
Answer:
$74.75
Step-by-step explanation:
When it comes to tax, the sales tax is applied <em>after</em> the discount is provided by the store, as long as it is something like a direct store coupon or a discounted price. In this case, it is a discounted price by the store, so we will include sales tax after.
$79.20 after a 12% discount becomes $69.70 (or $69.696).
The state tax applies to this new price.
7.25% of $69.70 is $74.75