this hotel lobby is being carpeted. each unit length represents one yard. carpet costs$22.50 per square yard. how much will it cost to carpet the room.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

15/16 as a decimal rounded to the nearest hundredth

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?