400 square feet because 10*40 is 400
Answer:

Step-by-step explanation:
The formula of a slope:

We have the points

Substitute:

Answer:
Option A, no trend
Step-by-step explanation:
<u>Since the points are all over the graph, that means that there is no trend.</u>
<u />
If all the points followed a straight line toward positive infinity, it would be positive trend.
If all the points followed a straight line toward negative infinity, it would be negative trend.
Answer: Option A, no trend
Step-by-step explanation:
the slope of a line or linear equation is always the factor of the driving variable.
usually in the form of
y = ax + b
x is the variable, and a the slope.
but in our case the variable is called "n".
it does not matter, the same principle applies.
the slope is the factor of n : 1050.
and as the slope is always the ratio y/x, we are looking for a fraction form, and that would be 1050/1.
so, the third answer is correct.
Square both sides
9(x + 2) = x + 4
Expand
9x + 18 = x + 4
Subtract x from both sides
9x + 18 - x = 4
Simplify 9x + 18 - x to 8x + 18
8x + 18 = 4
Subtract 18 from both sides
8x = 4 - 18
Simplify 4 - 18 to -14
8x = -14
Divide both sides by 8
x = -14/8
Simplify 14/8 to 7/4
<u>C. x = -7/4</u>