Let's break down the problem step by step:

1. Initial price of the coffee maker: $110

2. Coupon discount: 30% off

   To calculate the price after applying the 30% off coupon: $\text{Discounted price} = 110 \times (1 - 0.30) = 110 \times 0.70 = 77$ So, the price after the coupon is $77.

3. Mail-in rebate: $10

   After applying the rebate, we subtract $10 from the discounted price: $\text{Final price} = 77 - 10 = 67$

Thus, the final price Emily pays is $67.

Answer: A. $67

Do you need further details or have any other questions?

Related Questions:

1. How would the final price change if the coupon was 20% instead of 30%?
2. What if Emily received a 25% discount and the rebate was only $5?
3. How would the final price change if the original price was $120?
4. What is the total percentage discount Emily received after applying both the coupon and the rebate?
5. How can Emily calculate the price if she also has to pay 8% sales tax before the rebate?

Tip:

When applying a percentage discount, multiply the original price by the percentage left after the discount. For example, with a 30% discount, multiply the original price by 0.70 (100% - 30%).