Answer:

Step-by-step explanation:
we have

Eliminate the parenthesis

Group terms that contain the same variable

Combine like terms

The answer is the D ( the last one)
Answer:
yes
Step-by-step explanation:
Simplifying then comparing both terms 0.3and 0.15, 0.3 is greater than
0.15, which means that the first term is greater than the second term.
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.