At best buy they have a 42' tv that sells for $1250 and is on sale for 15% and sales tax is 6.5%.what is the final cost?

show work

Well, first you would find the total of the discounted price.
What is $1250.00 - 15%?
We must figure out what 15% of 1250 is and subtract that from your total.
15% of 1250 is $187.50

So now, we subtract. 1250.00-187.50=1062.50

Finally, we must find what the sales tax will bring our grand total to.
So, 6.5% of 1062.50= 69.07.

Then we add 69.07 to 1062.50 and we have a grand total of:
$993.43