Add or subtract negative numbers
2 answers:
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1) Since in the USA 8 x 10 ^9 messages are sent every month, that means that approximately 8 billion messages are sent.
2) We can Prime factorize it:
Note that on the right side we've picked only prime numbers. In this case, 2 and 5.
So we can rewrite 8 x 10^9 as prime factors.
3) Hence, the answer is:
The first graph.
The equation is x - 1
3
In order to solve it, you need to get x by itself.
Add 1 to both sides. 3+1=4
x 4
Since this is your sign the arrow has to point towards the left, and the circle needs to be colored in.
The equation is x - 1
In order to solve it, you need to get x by itself.
Add 1 to both sides. 3+1=4
x
Since this is your sign