I believe the one you have selected is correct.
A. The term "units" refers to the measurements in the original question or problem. When looking at the question, the units we are measuring are dollars/feet.
B. In this case, the f'(x) means we are looking for the cost (in dollars) to drill the next foot down.
C. Since the cost increases the more feet we drill down, the sign of f'(x) is positive.
Answer:
Slope <em>m</em> = 6
y-intercept <em>b</em> = -5
General Formulas and Concepts:
<u>Algebra I</u>
Slope-Intercept Form: y = mx + b
- m - slope
- b - y-intercept
Step-by-step explanation:
<u>Step 1: Define</u>
[Slope-Intercept Form] y = 6x - 5
<u>Step 2: Break Function</u>
<em>Identify Parts</em>
Slope <em>m</em> = 6
y-intercept <em>b</em> = -5
Find the volume by multiplying the width by the length by the hight. so 4 times 4 times 12. and you get 192 cubic inches.
