Ernise evaluated the expression 10(3 + 5) like this:
step 1: 10.3 + 10.5
step 2: 30 + 50
step 3: 80
which mathematical property was she using?

Choose the right classification of 5x + 3x^4 - 7x^3 + 10 by number terms and he degree 1. third degree polynomial 2. fourth degree polynomial 3. sixth degree polynomial 4. first degree binomial