The cost of manufacturing
units is
, where
cost per unit and
fixed cost.
Given that

Subtract the second equation from the second,

The variable cost per unit is
.
Using the given exponential function, it is found that it will take 1.5 years for the amount of savings to double from the initial amount deposited of $1250.
<h3>Exponential function:</h3>
The <em>exponential function</em> that models the savings in the bank account is given by:

- In which t is the time in years that the money has been in the account.
The time to double from the initial amount deposited of $1250 is t for which S(t) = 2(1250) = 2500, hence:








It will take 1.5 years for the amount of savings to double from the initial amount deposited of $1250.
To learn more about exponential functions, you can take a look at brainly.com/question/14855561
Answer:
6 laptops.
Step-by-step explanation:
$6500 is the budget. If each textbook costs $116, and 30 textbooks are needed, you multiply.
116 x 30 = 3480.
3480 was spent on the textbooks, and the rest needs to go into laptops.
6500 - 3480 = 3020.
Now to find out how many laptops can be bought with the remaining money, divide.
3020 / 439 = 6.88 (You can't buy a portion of a laptop, so you have to take the biggest whole number, which is 6).
Answer:
The third coice should be your answer. Have a nice day.
you have to subtract 14 to the total cost to see how much you get back, use a calculator next time.