Help solve blank ones or let me know if i have any wrong please

Convert 16 yards to feet use the conversion rate 3 feet = 1 yard

Match each expression with its simplified form.

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.