B=2b+15
a=-3b+21
b=b
Step-by-step explanation:
Answer:
He ate it or he may have ate some in some packs then refilled the other packs.
Step-by-step explanation:
Answer:
(0,0) is a solution.
Step-by-step explanation:
To see if this is true you can put (0,0) into the 
and 
variables like so: 
. When you solve this you get 
so this statement is true
Answer:
A: Any positive value
Step-by-step explanation:
Negative numbers don't have real square roots since a square is either positive or 0. The square roots of numbers that are not a perfect square are members of the irrational numbers. This means that they can't be written as the quotient of two integers.
