Answer
$17797.81
Work Step by Step
We can calculate simple interest on a loan by using the formula $I=prt$ (where I is the interest, p is the principal, r is the rate of interest, and t is the amount of time - expressed in years).
$r=7.5$%$=7.5\div100=.075$
$t=\frac{3}{4}$, because 9 months is equal to .75 years
$I=prt$
$I=16850\times.075\times\frac{3}{4}=947.81$ dollars
Finally, we can find the amount due by adding the interest to the original principal.
$16850+947.81=17797.81$ dollars