Which equation shows how the properties of numbers extend to negative whole numbers by the commutative property of addition? a) -2 + 4 = 4 + (-2) b) -2(4) = 4(-2) c) (-2 + 4) + 3 = -2 + (4+3) d) -2(4+3) = (-2 x 4) + (-2 x 3) !

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.