What are the prime factors of 144

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

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.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?