It’s -7
Because you subtract -2 with 7 and it equals 5x=-35 and then u divide it and it equals -7
Answer:
x=
Step-by-step explanation:
3x-12-6x+21=23
-3x+9=23
-3x=14
x=
The one that you have marked in the picture is right because you are taking away two hours and dividing 400 by s
A linear equation is represented as:
.
The equation of the line is: 
First, we calculate the slope (m) of 
Make y the subject

Divide by 18

In 
slope
So, the slope of
is:

Since, the line is perpendicular to 
The slope of the line is:

So, we have:


The line passes through (4,-2).
So, the equation is:

This gives:



Hence, the linear equation is:

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Answer:
Account B would be the best option
Step-by-step explanation: