Which phrase represents the algebraic expression 3p+6/7p-9

the sum of six times a number and three, multiplied by the difference of nine times the number and seven
the sum of six times a number and three, divided by the difference of nine times the number and seven
the sum of three times a number and six, multiplied by the difference of seven times the number and nine
the sum of three times a number and six, divided by the difference of seven times the number and nine

The answer is the sum of three times a number and six, divided by the difference of seven times the number and nine

The phrase is (3p+6)/(7p-9)
Let's describe each factor:
3p is three times a number
7p is seven times a number

3p+6 is the sum of three times a number and six
7p-9 is the difference of seven times the number and nine

The last two factors are divided, so
(3p+6)/(7p-9) is the sum of three times a number and six, divided by the difference of seven times the number and nine