What's another name for plane z

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?

Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6