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
The 'i' should go in front of the square root, not inside it.
So the answer should be 
--------------
The way they wrote the expression 
is bit misleading as it might imply that the 'i' is under the square root. However the square root ends after the "5". It might be better to say 
so there is clearer separation. But sticking the "i" in front is also a valid option.
side note: the plus minus part is already handled so there's no need to worry about that.
Answer:
3rd one
Step-by-step explanation:
23=4w-13
First add 13 to both sides.
36=4w
w=9
Hope this helps!
Answer:
You must provide more info!
Step-by-step explanation:
I don't know, due to lack of information!
