NEED HELP FAST MARKING PEOPLE AS BRAINLIST

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.

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

What is the y-intercept of the line with the equation 3x + 4y = 12?