Answer:
Step-by-step explanation
Each week a discount of 15% of the previous week.So the price will be 85% of the previous week (17/20 of the previous price)
We multiply the price from the previous week by 0.85 to obtain the new price
200 x 0.85 = 170
170 x0.85 = 144.50.....and so on
3)$ 122.82
4$)104.40
5).$88.74
6)$75.42
The shoes will be less than half in week 5
DECAY
The friend is not right
$30 less was only the first week
Each week the saving will be 85% of the previous week. But the shoes will not be free in 2 months On the week 8 the price will be $54.50
