Answer:
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Step-by-step explanation:
Given
$1000 for 9 days
$750 for 10 days
$850 for 4 days
$900 for other days
Required
Compute the daily average
First, we need to compute the number of days her balance is $900
Assuming the billing cycle is 30 days;



The Average is then calculates using:




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<em> --- Approximated</em>
your answer would be c. y times parentheses 5 plus y times a. C. y • (5 + y) • a
I hope this helps
Answer:
the last one
Step-by-step explanation: