Answer
$7.12
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).
$t=1$, because 12 months equals 1 year
$I=prt$
$I=178\times.04\times1=7.12$ dollars