Solve this system of equation

r+3s+t=3
2r-3s+2t=3
-r+3s-3t=1

Medium sodas cost $1.25 and hot dogs cost $2.50. natalie’s group brought in pizzas but is buying the drinks at concession stand. how many medium sodas can natalie’s group buy with $20? make a table to show answer.

Which one is true about the hexagons ?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn