She did not divide 28 by7
Don't really know how to explain it, but here's an example on how to factor out the coefficient of the variable, hope this explains it!
Factoring out the coeffecient of a variable:
Example:
9x-36
How to factor the coeffecient of the variable: Would then get 9(x-36)
Another example:
1/5k+15
Answer: (1/5)(k+15)
Answer:
-7
Step-by-step explanation:
the equation can be simplified to y = -2x - 7
the last number of the equation represents the y-intersept
hope this helped!
For this case we must calculate the values of the unknowns.
We have then:

is 3,000 times greater than

We have the following equation:

From here, we clear the value of x:

Then, on the other hand we have:
"and is _____ times greater than 1.38 × 101"
That is, we have the following equation:

The value of y is:
Answer:
6.9 × 105 is 3,000 times greater than 2.3 × 102 and is 50000 times greater than 1.38 × 101.