Answer:
Step-by-step explanation:
If you add 13 +15 you get 28$ if we were to write that as an integer out of 20 it would be 28/20 but as an improper fraction, it would need to be simplified into 1 and 8/20 ( 1 8/20)
If you are looking how much she lost out of the 20 she lost today it would be 13/20
Hope this helps
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To do so click the crown above the desired answer which would mark as brainliest
Answer:
-5.5
Step-by-step explanation:

Answer:
42.69% of information is acquired by the student in two weeks.
Step-by-step explanation:
We are given the following in the question:

where a and b are constants.

p tells us about the percentage of acquired knowledge that a person retains after t weeks.
We have to find the percentage of knowledge acquired in two week.
We put t = 2

Thus, 42.69% of information is acquired by the student in two weeks.