Answer:
y in terms of x would be:
y = 100 - 10,000 / (100 +x)
Explanation:
Let us assume the investment amount is 100
And let x is equal to 25 and y is equal to 20
So, there is increase in January
= 100 + 25% × 100
= 100 + 25
= 125
In order to decrease, it is to be back down to 100 in February, y =20
= 125 - 20% × 125
= 125 - 25
= 100
Therefore, in order to check that the value of y is correct or not, which we assumed. We will plug
x = 25 into the equations:
= 100 - 10,000 / (100 + x)
= 100 - 10,000 / (100 + 25)
= 100 - 10,000 / 125
= 100 -80
= 20
Therefore, this equation is right.
Note: Options are not given so providing the direct answer.
