3% wage increase, starting at $29.41, once per year, for 4 years.
A 3% wage increase means your wages become 103% of what they were before the increase. 103% = 1.03, so that means we multiply your wages by 1.03.
Once per year for 4 years means we multiply your wages by 1.03 four times, * 1.03 * 1.03 * 1.03 * 1.03 or just * 1.03^4.
$29.41 * 1.03^4
$33.10