Hi student, let me help you out! :)
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We are asked to find the slope of this graph; we are provided with two points:



- What we need in order to find the slope are two points and the slope formula.
Here's the formula:

Where
y2 and y1 are y-coordinates
x2 and x1 are x-coordinates
Substitute the values:

Simplify!

Simplify more!

Hope it helps you out! :D
Ask in comments if any queries arise.
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<7 and <10 are each 84 degrees
Answer:
D
Step-by-step explanation:
Legnth of 1 section times number of sections=number of feet needed=6*12=72
72ft=850
divie both sides by 72
1ft=11.8055555
1 ft=$11.81