.Explanation
The question gives us an exponential equation and asked that we determine the growth rate
Growth rates refer to the percentage change of a specific variable within a specific time period
From the given expression:
![f\mleft(x\mright)=250\left(1.03\right)^x](https://img.qammunity.org/2023/formulas/mathematics/high-school/k9zzjk7k0sswmf28fc685u98h6w5ld2ld5.png)
If we are to deduce the growth rate, then we will have to compare it with the general formula
![\begin{gathered} f\lparen x)=A\left(b\right)^x \\ where\text{ b is the growth factor} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/high-school/cwgdywxlngcqipaoos3wsfekea7h9iog1q.png)
The growth factor is the factor by which a quantity multiplies itself over time. The growth rate is the addend by which a quantity increases (or decreases) over time
Thus, in our case
![\begin{gathered} Growth\text{ factor=b=1.03} \\ Growth\text{ rate =Growth factor -1} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/high-school/1rf2fmg9frz7pxivwodq2dnacc255c3vmd.png)
Thus
![Growth\text{rate=Growthfactor-1=1.03-1=0.03}](https://img.qammunity.org/2023/formulas/mathematics/high-school/agtwq13ck02em1gcg7rlsrkz394usf2g77.png)
Hence, the growth rate is 0.03
Because the account increases by 0.03 overtime
The answer is 0.03