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the price of silver has increased by 15% per year from 2000. in the year 2000, harry bought a silver bowl for $190. which of the following functions f(x) can be used to represent the price of the bowl x years after 2000? f(x) = 190(0.85)x f(x) = 190(1.15)x f(x) = 15(190)x f(x) = 15(0.85)x

User TheSealion
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2 Answers

6 votes

Answer:

f(x) = 190(1.15)x

Explanation:

User Merrin K
by
8.0k points
3 votes

Answer

f(x) = 190(1.15)x

Explanation

To solve this, we are going to use the standard exponential function:


f(x)=a(1+b)^x

Where


f(x) is the final price after
x years


a is the initial price


b is the rate in decimal form


x is the time in years

We know from our problem that the initial price is $190, so
a=190. Now to convert the rate, 15%, to decimal form, we are going to divide it by 100%, so
r=(15)/(100) =0.15. Let's replace the values:


f(x)=a(1+b)^x


f(x)=190(1+0.15)^x


f(x)=190(1.15)^x

User Lucas Jones
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