Answer:
$879.19
Step-by-step explanation:
I'm not sure how you got that, but here's what I did.
To calculate tax:
Cost before tax * Tax% = Tax
$815.95 * 7.75% = $63.24
To calculate cost after tax:
Tax + Cost before tax = Cost after tax
$63.24 + $815.95 = $879.19
The shifted down three units therefore c=-3
The answer to your question is 2 which means x=2.
7 is 4838
8 is 2881
and 9 is 1764
