Step-by-step explanation:
I researched what identity property was and the answer is pretty straightforward, simply telling us the any number multiplied by 1 will always be the number itself, hence for question 1, it is the 2nd option
for the 2nd question,
-3•(4+7) = (-3•4)+(-3•7) due to the 'rainbow method' that I use in my country to expand the terms similar to how I expand algebraic expressions
hence the answer for the 2nd question is the last option, very sure !
