Acertain forest covers an area of 4100km squared. if each year the area decreased by 4.5% what will be the area after 15 years

  2055 km²

Step-by-step explanation:

The amount of forest remaining after t years can be modeled by the exponential equation ...

  remaining = original · (multiplier each year)^(number of years)

  area = 4100·0.955^t

Then for t=15, the area is ...

  area = 4100·0.955^15 ≈ 2055.1 . . . . km²

The area of the forest after 15 years will be about 2055 square kilometers.

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.

just sum

10 + 10 = 20