Answer:
= $44.19
Step-by-step explanation:
APR = 19%
Billing cycle = 30 days
Balance = $2830
Let's first find the daily rate,
Daily rate = 
The daily rate = 0.000521
To calculate the amount Shirley was charged interest for the billing cycle, we use:
Daily rate * billing cycle * balance
Where,
Daily rate
= 
Billing cycle = 30 days
Balance = $2830
Therefore, expression to be used =

A = 1944 m²
hope this helps
It is B. Because the 3$ doesn't have any variables and the 2 dollars is per hours so 2x
(4x+3) (2x-5)
8x^2-20x+6x-15
8x^2-14x-15