The sum of three numbers is 3. The first number minus the second plus the third is -3. The first minus the third is 1 more than the second. Find the numbers. What is the first number? What is the second number? What is the third number?​

How do you determine whether a relationship represented as as graph is linear or nonlinear

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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.