Answer:
Malachi's fishing rod's total cost was $110.3.
Explanation:
The regular price of the fishing rod was $125.99.
He bought it on sale with a 15% discount.
So, the price becomes:

= $107.09
And a sales tax of 3% is applied to the discounted total.
This tax value becomes:
= $3.21
So, the final price becomes:
= $110.3
Therefore, Malachi's fishing rod's total cost was $110.3.