According to The Motorist, a publication of the American Automobile Association, 90% of all calls for emergency service on a cold winter day in Flagstaff are for cars that won’t start because of a dead battery, 10% of the calls are for cars that won’t start because they have no gas, and 4% of the calls are for cars that won’t start because of a dead battery and no gas. If a typical call is randomly selected, what is the probability that it is for a car that won’t start because of a dead battery or because of no gas?

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.