Reporting Business Income (Credit Card Referrals)

Hi, I started a travel blog in 2019. I earned some credit card points via credit card referrals. This past year a few of the banks started issuing tax forms (1099-MISC) for each of these credit card referrals. Can I count the income reported on these forms as business income instead of personal income? How best would I do that?  

Some additional background... I have no other business income from the blog. My business expenses were ~$100. TIA!