5 Which property of real numbers is illustrated by the
equation - 3 + 3 = 0?
1) additive identity
2) commutative property of addition
associative property of addition
4) additive inverse

Additive inverse

Step-by-step explanation:

Every real number has an additive inverse, i.e., for every real number x, there exists a real number y such that

Obviously, y is simply -x.

So, in this case, we can see that 3 and -3 are additive inverse, because they give 0 when summed.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice