HELP! Please i need to to be done, I actually want to learn also, so if u could, explain how u got the answer so I can understand this for the next time

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′.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Which two undefined geometric terms always describe figures with no beginning or end?