<span>If Ms. Lund lives in an area where the cost of living is low, $42,000 a year over a twenty-five year period could allow her to live frugally, save, invest, and now in her forties be able to cash in some of her investments to buy the house and car of her dreams. At the same time, it would be the course of prudence to bring in an outside auditor.</span>
Answer:
The value of x component changes at a rate of
units per second
Step-by-step explanation:
We are given that 
Differentiating on both sides with respect to time we get

It is given that
Solving for
we get

See the attached picture:
Answer: 29 miles per gallon.
Reasoning: 856 miles/29.4 gallons = 29.1156462585 (rounded to the nearest mile = 29)
Hope this helped!