Answer :
Answer:
his altitude was 5 I think
Step-by-step explanation:
-4.5+6= 2.5
2.5+2.5= 5
Answer:
-8.5
Step-by-step explanation:
If he swam 6 times deeper then he would be going down making his new height be -10.5. He then swam up 2.5 making his new depth -8.5