Felix buys a carpet for $230. The price is $3.50 per square foot. If Felix had a special discount coupon for $50 off, which line
2 answers:
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Correct Answer: Fourth Option
The total cost is the sum of cost of Ballet Classes for kids and cost of Ballet classes for adults.
For Kids:
The cost is $3200 and is increases at a rate of 2% every year. So the cost after x years can be expressed as:
For adults:
The cost is $4800 and is increases at a rate of 2.7% every year. So the cost after x years can be expressed as:
Total cost is the sum of these two costs. So,
![T(x)=3200(1.02)^{x}+4800(1.027)^{x} \\ \\ T(x)=1600[2(1.02)^{x}+3(1.027)^{x} ]](https://tex.z-dn.net/?f=T%28x%29%3D3200%281.02%29%5E%7Bx%7D%2B4800%281.027%29%5E%7Bx%7D%20%5C%5C%20%5C%5C%20T%28x%29%3D1600%5B2%281.02%29%5E%7Bx%7D%2B3%281.027%29%5E%7Bx%7D%20%5D)
Therefore, Fourth option is the correct answer.
The total cost is the sum of cost of Ballet Classes for kids and cost of Ballet classes for adults.
For Kids:
The cost is $3200 and is increases at a rate of 2% every year. So the cost after x years can be expressed as:
For adults:
The cost is $4800 and is increases at a rate of 2.7% every year. So the cost after x years can be expressed as:
Total cost is the sum of these two costs. So,
Therefore, Fourth option is the correct answer.