Answer:
see below
Step-by-step explanation:
The couch is 765
Rounding its price to 750 dollars
We get 30 percent off which means we pay 70 percent of the value
take 750 time 7 = 5250 and move the decimal one place to the left since we multiplied by 7 and not .7
525
The cost of the couch is around 525 dollars
The actual sale price is
765 * .7 =535.50 so our estimate is a little low