Hey! Can someone better at math then me please help?!?!? Can you also explain how you found the answer because I have a ton of similar problems. Thanks so much! Which of the following ordered pairs is a solution of x + y = 1?

(-2, 6)
(-2, -6)
(2, -6)

thank yo!!!

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.