This is only one equation. It is therefore not a system and you can not solve for two different variables y and z unless you have another equation to solve with. It.
Answer:
Choice A
Step-by-step explanation:
(4m^5n^2/m^2n)^3
dividing exponents = subtraction
(4m^3n)^3
4^3 = 64
(m^3 )^3 = m^3x3 = m^9
64m^9n^3
If you mean unit rate you find it by dividing the top number by the bottom number to fin the singular number or unit rate.
2 because there are 4 numbers of edges and 4 vertices