Which ordered pairs are solutions to the equation x+14y=15

(5,5/7)
(4, 11/14)
(-5, 10/7)
(3,2)
none of the above

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.