The amount of interest that Natalie will earn on her investment is $1,800.
EXPLANATION
Given:
Principal(P) = $15 000
Rate = 4
Time = 3
Using the simple interest formula below:
[tex]S\mathrm{}I=\frac{P\times R\times T}{100}[/tex]Substitute the values and evaluate.
[tex]S\mathrm{}I=\frac{15000\times4\times3}{100}[/tex][tex]=\text{ \$1,800}[/tex]Therefore, the amount of interest that Natalie will earn on her investment is $1,800.