A system of equations is given below: y = 3x + 4
2x + 3y = 10
Which of the following steps could be used to solve by substitution?
оа
3x + 4 = 2x + 3y
Ob
2x + 3(3x + 4) = 10
Oc
2(3x + 4) + 3y = 10
Od
3(y = 3x + 4)

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

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.