Step 1: Write down known values

$$

\begin{aligned}

P &=1000 \\

i &=0,07 \\

n &=3

\end{aligned}

$$

Step 2: Write down the formula

$$

A=P(1+i n)

$$

Step 3: Substitute the values

$$

\begin{aligned}

A &=1000(1+0,07 \times 3) \\

&=1210

\end{aligned}

$$

Step 4: Write the final answer

At the end of 3 years, Carine will have $\mathrm{R} 1210$ in her bank account.