QUESTION:
n + 3 = -7
ANSWER:

STEP-BY-STEP EXPLANATION:
First, Subtract 3 from the both sides of the equation

Last, Subtract 3 from - 7

hope it's helps
The picture is blank for me. Please take clearer pictures leveled with the question! :)
Answer:
42
Step-by-step explanation:
The answer to life the universe and everything is 42
Answer:
Arsenic-74-is used to locate brain tumors. It has a half-life of 17.5 days. ... C. Find the amount remaining after 6 days from a 90-mg sample