Answer:
$519.61
Step-by-step explanation:
We add the 8% tax 23 days of subscription since prorated for 7 days [30 - 7 = 23].
How much is 23 days subscription if 30 days is 499?
[tex]\frac{30}{499}=\frac{23}{x}\\30x=23*499\\30x=11,477\\x=382.57[/tex]
We add 8% of this to 499:
0.08 * 382.57 =30.51
So cost is:
499 + 30.61 = 529.61
Now we have $10 off, so final cost would be:
529.61 - 10 = $519.61
