Y=5x-10 y=3×+8 solve the system of equations by using substitution

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).