4-7x= 39
Subtract 4 from both sides
-7x= 35
Divide both sides by -7
x= -5
The value of x+1= (-5)+1= -4.
Shown below
<h2>Explanation:</h2>
The stairway to a cellar has a slope of -4/3, that is:

On the other hand, the cellar is 2m below the ground. In other words:

So this can be modeled by the equation of the line:

The line has a y-intercept at point (0, -2) and as x increases 3 units y decreases 4 units. So:

Finally, let's draw a line that passes through:

By using graphing tool, we get the line shown below.
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Answer:
what's the problem? the I should answer?
Answer:
d
Step-by-step explanation:
Slope intercept form: y = mx + b
y = -x + 7
x + y = 21
x + y = 21
-x -x
y = -x + 21
y = -x + 7
y = -x + 21
Parallel lines have the same slope. Here, our slope is -1
Therefore, our final answer is d.
Hope this helps!
I might be wrong, but there’s not enough info to solve this. You know she needs 30 pounds per square foot, but how big is the garden in the first place?