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The function A(t)=525(1+0.05)^t represents the amount of money in the account after t years. How much more money did Taber originally invest?
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The function A(t)=525(1+0.05)^t represents the amount of money in the account after t years. How much more money did Taber originally invest?

User Block
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The amount of money originally invested corresponds to the amount of money at time t=0, so we can find it by putting t=0 inside the equation of A(t):

A(t)=525(1+0.05)^t
So, using t=0

A(0)=525(1+0.05)^0=525 \cdot 1 = 525

So, the amount of money originally invested by Taber is 525.
User YeJiabin
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