Final answer:
By setting up an equation for the cost of both rental plans and solving for the number of rentals, it is determined that 12 video rentals are needed for Plan A and Plan B to cost the same amount.
Step-by-step explanation:
To find how many video rentals are needed for both rental store plans to cost the same amount, we set up an equation where the total cost of Plan A equals the total cost of Plan B. Let's define x as the number of video rentals.
For Plan A, the cost each month is the $5 monthly fee plus $1 per rental, this would be represented as 5 + x. For Plan B, the cost each month is the $8 monthly fee plus $0.75 per rental, this would be represented as 8 + 0.75x.
To find when they are equal we set up the equation: 5 + x = 8 + 0.75x
To solve for x, we rearrange the equation:
- Subtract 0.75x from both sides: 5 + 0.25x = 8
- Subtract 5 from both sides: 0.25x = 3
- Divide both sides by 0.25: x = 3 / 0.25
- Simplify: x = 12
Therefore, it would require 12 video rentals for the plans to cost the same amount.