Answer:
Part 1) The cost per second is 
Part 2) The cost per customer is 
Step-by-step explanation:
Part 1) Calculate the cost per second
we know that
To find out the cost per second, divide the total cost by the time
Let
x ----> the total cost
y ----> the time in seconds
we have



therefore
The cost per second is 
Part 2) Calculate the cost per customer
we know that
To find out the cost per customer, divide the total cost by the number of customers
Let
x ----> the total cost
y ----> the number of customers
we have



therefore
The cost per customer is 
His investment will reach 14,100 after 47 quarters or 11 years and 9 months
Answer:
47.4 is the correct answer.
Step-by-step explanation:
Helpful?❤️
I don't think i am doing that.
To find an estimate, the bets ting to do is to round $48 up to $50.
As you've got to find 20%, just divide $50 by 5
$50/5= $10
An estimate for a 20% tip of $48 is $10
Hope this helps :)