Leanne runs on the treadmill and rides the exercise bike at the gym to stay in shape. She burns 15 calories per minute on the treadmill and 9 calories per minute on the bike. She wants to ride the bike 2.5 times as long as she runs on the treadmill and burn a total of 580
calories. The system of equations below can be used to find the number of minutes, t, she should run on the treadmill and the number of
minutes, b, she should ride the bike.
| 151 +95 - 580
b-2.51
According to this system of equations, can Leanne meet both her goals?
A. No, she cannot run on the treadmill for a fractional number of minutes.
OB. Yes, she can run on the treadmill for 15 minutes 28 seconds.
C. No, she cannot ride the exercise bike a negative number of minutes.
D. Yes, she can ride the exercise bike for 15 minutes 28 seconds.

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.