Answer: $30,000
Step-by-step explanation:
From the question, we are given the information that for four years, Marty Campbell invested $7,500 each year in Harley-Davidson.
The total investment of Marty in Harley-Davidson will be the amount that is invested each year multiplied by 4. This will be:
= $7,500 × 4
= $30,000
The total investment of Marty in Harley-Davidson is $30,000.