Ameteor crater is 3900 feet in diameter. approximate the distance around the crater. use 3.14 for pi.

"The distance around a circle" = Circumference

Circumference = 3.14 * diameter

3900 * 3.14 = 12246

The circumference (distance around the crater) is equal to 12,246 feet

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

the answer is c

hope this !