The temperature at 5 am was -3 degrees
12-15=-3
Add 1 to both sides:

In cases like this, we have to remember that a root is always positive, so we can square both sides only assuming that

Under this assumption, we square both sides and we have

The solutions to this equation are

But since we can only accept solutions greater than -1, we discard
and accept
.
In fact, we have

and

which is the only solution.
<span>you have to create variables that have the same coefficient</span>
Answer:
120 coins our in her purse if the 2 dollar factor is made up of nickels
Answer:
y=-3x-2
Step-by-step explanation: