Compare the average score of a student at the beginning of a month and at the end of that month, if at first, it increased by 40%, then decreased by 25%
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Increased by 5%

Step-by-step explanation:

Let at the beginning the student's score be points.

At first, it increased by 40%. So, the new score is

Then it decreased by 25%, so the new score is

At the beginning of a month the score was and at the end of that month the score was . Since the score increased by

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

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