Ok srry to bother you all but i have some questions that are hard to me and i also struggle with math a lot but anyway.

which property is shown? -2 +(-15)= -(2 + 15)?

identity property
commutative property
opposite of a sum property
associative property

which of the following lists all the integer solutions of the inequality

-2, -1, 0, 1, 2
-2, 0, 2
0, 1, 2, 3
0, 1, 2

what is 451.568 rounded to the tenths place?
451.6
451.5
451.57
450

the radius of a circle is 14 centimeters. what is the diameter of the circle?

28cm
14cm
56cm
66cm

plz so confused