hello
to solve this question, we need to use the formula of simple interest
[tex]\begin{gathered} s\mathrm{}i=p(1+rt) \\ s\mathrm{}i=\text{simple interest} \\ p=\text{principal} \\ r=\text{rate} \\ t=\text{time} \end{gathered}[/tex][tex]\begin{gathered} s\mathrm{}i=p(1+rt) \\ p=250 \\ r=3\text{ \% = 0.03} \\ t=4 \\ si=250(1+0.03\cdot4) \\ s\mathrm{}i=250(1+0.12) \\ s\mathrm{}i=250\times1.12 \\ s\mathrm{}i=280 \end{gathered}[/tex]Emarie would have $280 at the end of four years
her interest would be simple interest - principal
[tex]\begin{gathered} \text{ interest=\$280-\$250} \\ \text{ interest=\$30} \end{gathered}[/tex]at the end of four year, Emarie would have $30 in his account
