Final answer:
Eric's total cost after applying a 20% off coupon to a $96 digital camera and purchasing an additional $14.99 battery is $91.79.
Step-by-step explanation:
Eric downloads a 20% off coupon for any one item and decides to purchase a digital camera for $96 and an extra battery for $14.99. To calculate the total cost with the coupon applied to the digital camera, we first need to determine the discount amount on the camera. A 20% discount on the $96 camera equals $96 x 0.20 (convert percent to decimal by dividing by 100). This gives us $19.20 as the discount amount.
Now, subtract the discount from the original price of the camera: $96 - $19.20 = $76.80. Next, add the price of the extra battery, which is $14.99, to get the total cost of both items: $76.80 (discounted camera price) + $14.99 (battery price) = $91.79.
Therefore, the total cost Eric has to pay with the coupon applied to the digital camera and including the extra battery is $91.79.