Natasha places an online order for plate holders to display her antique plates. she chooses a specific site because it has a promotional offer of 15% off on all purchases. she orders 3 large holders for $4.95 each, 2 medium holders for 3.25 each and 2 small holders for $1.75 each. there is no sales tax on her purchase, but she must pay a flat rate of $5.35 for shipping and handling. what is the total of natasha? s online purchase? a. $19.64 b. $24.18 c. $26.47 d. $28.45 select the best answer from the choices provided a b c d

Carla was trying to decide what to do saturday evening. she has $100 available to spend for the evening. she has narrowed her choices down to these events: braves game, a concert of an artist she likes, or the georgia aquarium. admission to the braves game is $25, hot dogs cost $10, sodas cost $5. the concert costs $25 for admission, $20 for a souvernir t-shirt, and $10 for a soda. the georgia aquarium has the show of a lifetime with an all you can eat and drink that costs $100. carla does not want to take any driving chances, so in addition to the cost of the aquarium, she will also need to pay for her uber/lyft, which is $15 each way. which option should carla choose if she wants to spend the least? based on that choice, what then is carla's oppotunity cost? fully explain your answer in at least one paragraph.