What is the value of n in the equation below?

A:5
B:6
C:10
D:12

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Can someone me out here number 4 plz