Solve the following system via elimination
3x - y = 28
3x+y=14

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

Mrs.sling bought a pound of green beans for $1.80. how much will mrs.tennison pay for 3 1/2 pounds of green beans?