Answer:
8 rental movies will make the costs of the two stores be the same
Explanation:
- Mr Cosgrove is comparing movie rentals deals
- Netflix charge a flat rate of $8.50
- Blockbuster charge $4.50 plus a $0.50 per movie
- We need to find how many movie rental make the costs of the two
stores will be the same
- Assume that the number of rental movies is m
∵ Blockbuster charge $4.50 plus a $0.50 per movie
∴ Blockbuster cost = 4.50 + 0.50 m
∵ The cost of Netflix = 8.50
- Equate the two costs to find the number of the rental movies
∵ 4.50 + 0.50 m = 8.50
- Subtract 4.50 from both sides
∴ 0.50 m = 4
- Divide both sides by 0.50
∴ m = 8 movies
8 rental movies will make the costs of the two stores be the same