Greg bought 2 boxes of balloons. he used half of them to decorate his yard. he used 40 to decorate his porch. he used the rest inside his house. how many balloons did they use inside?

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.