Step-by-step explanation:
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Answer:
A. f = 400 + 50d
Step-by-step explanation:
First, let's understand each quantity/variable.
- d: The variable, d, represents the number of days.
- f: f represents the total amount of eyeliners sold after each day.
- 400 eyelines sold: This means that Rihanna sold 400 eyeliners on the first day of the release of her liquid eyeliner. This is known as the y-intercept.
- 50 eyeliner sales per day: This means that after her first day, Rihanna sold 50 eyeliners each day. This can be represented as 50d.
Now that we understand these variables, we can conclude that the equation would be A. f = 400 + 50d because to find the total, we have to add the 400 eyeliners sold at the beginning to the 50 eyeliner sales per day.
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