2. a pipe is draining water from a tank. the table below shows the time
in minutes and the number of gallons remaining in the lank.
time (min)
5 10 15 20 25
amount in tank (gal) 300 260 220 180 140
d. based on the information in the table, how many gallons of water
were in the tank before the draining started?
e. based on the information in the table, how long will it take to empty
all the water from the tank?
need with d and e

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

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.