Question

imming 3 feet below sea level. The number line shows thelocation of the dolphin. It then dove down 6 feet. Describe how to use thenumber line to find the new location of the dolphin.-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10O A. On the number line, move 6 units to the right. End at 9. The dolphinwas 9 feet above sea level.O B. On the number line, move 6 units to the left. End at -3. The dolphinwas 3 feet below sea level.O C. On the number line, move 6 units to the left. End at -9. The dolphinwas 9 feet below sea level.OD. On the number line, move 6 units to the right. End at 3. The dolphinwas 3 feet above sea level.

Answer 1

it is given the dolphin is 9 ft below the sea level.

let on the number line, the sea level is 0

so location dolphin is 0 - 9 = -9 on number line ..means 9 ft below the sea level or 0

now it swam up 5 ft

then location of dolphin is

- 9 + 5 = -4

that means on the number line moves 5 unit right side and the new location is -4 that is 4 unit below the sea level.

so the answer is D