Answer:
a) 
b) 
c) For this case we have the total sales $ 15 millions after t =4 months
d) 
e) This value represent the increase in the amount of sales in millions after t=4 months
Explanation:
For this case we have the following function for the sales
Part a
For this case we want to find the derivate of S respect to t and we got:
Part b
For this case we want to find the value of S when t = 4 so if we replace we got:
Part c
For this case we have the total sales $ 15 millions after t =4 months
Part d
For this case we just need to replace t=4 in the derivate and we got:
Part e
This value represent the increase in the amount of sales in millions after t=4 months
Supply of oil at different prices of other goods.
It should be the price right?
Answer:
its tooooooooooooooooooo length to answer
it have time for this
thankyou
Answer - A (7 years)
WORKINGS
To calculate how long it would take for the new refrigerator to pay for
itself in lower utility costs, the cost of new refrigerator will be divided by lower utility cost per
year
Cost of new refrigerator = $598
TO CALCULATE LOWER UTILITY COST PER YEAR
At a cost of only 12 cents per day
Annual cost will be 12 X 365 = 4380 Cents ($43.8)
Cost saved annually = Cost of old refrigerator – Cost of new
refrigerator.
Lower utility cost per year = $132 – $43.8
Lower utility cost per year = $88.2
How long would it take for the new refrigerator to pay for
itself in lower utility costs?
$598 ÷ $88.2
= 6.78 years
Approximately 7 years
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