Ahotel plans to use marble for part of the floor lobby. the marble section of the floor will be in the shape of a triangle with a base of 80 feet and a height of 60 feet. the marble flooring costs $6 per square foot. how much will the marble for the floor cost?

Sum of the interior angles of a pentagon

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.