Answer:
1. - 15 1/2 feet
2. 62 3/4 feet
3. 0 feet
Step-by-step explanation:
1. Descend means negative, so the answer needs to have a negative sign.
2. Above sea level means positive, so the answer needs to have a positive sign.
3. There is no change in position, so the answer needs to be 0.
hope this helps and is right!! p.s. i really need brainliest :)
its A
Trust me
gwen- 15times 2
alex-15 plus 7
15 times 2 is 30
15 plus 7 is 22
30 plus 22= 52
52 plus 15= 67