Can someone please help with this and explain how you the answer, I'll mark you as brainliest
1 answer:
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Answer:
Isabella earn more money than Gabriel
Step-by-step explanation:
As we know
Compound interest (CI)
P is the principal amount
t is the time period
n is the number of time periods
r is the rate of interest
a) CI for Gabriel
dollars
b) CI for Isabella
dollars
Isabella earn more money than Gabriel
Given
To obtain the minimum value of y, we first take the derivative of y
The derivative of y is:
Equating
gives the minimum value we require.
Doing that, we have:
So that
Therefore, the minimum value is x = 3