Write the equation for the proportional relationship. (Don't use spaces)

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.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?