Answer:
$719.95
Step-by-step explanation:
If the computer is originally $849 and you receive a 20% discount. This means you'll pay 80% of the price since 100-20=80.
To find this price, 80% as 0.8 is multiplied with the price. 0.8*849 = $679.20
This is the sale price.
When you pay you will pay 6% tax or 0.06 of the price. Find this by multiplying $679.20 by 1.06.
679.20(1.06) = 719.95