About 22/40 of a lawn is planted with kentucky bluegrass. what percent of the lawn is planted with kentucky bluegrass

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)