Question

A popular video game retailer develops apps. The total profit, in dollars per day, after x days can be modeled by the function R(x) = 3x3 – 21x2 + 21x + 45. The total cost, in dollars per day, after x days, can be modeled by the function A(x) = x2 – 2x – 3. After how many days does the retailer start making money?
40
20
10
5

Answer 1

Answer:

The answer is 5.

Step-by-step explanation:

I took the quiz but this is how I did it:

You go into desmos, put in  R(x) divided by A(x) as the graph formula, and then boom!