6 math questions super easy I just need someone’s help thanks:)

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.

What is the cube root of -1,000p^12q3? -10p^4 -10p^4q 10p^4 10p^4q