-7-9, because he already starts below the surface by 7 feet then digs 9 inches lower
2/3 divided by 1/2 equals 3/4.
So your answer would be 1/2.
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IF
2=5 ;
3=9 ; 3*5 - 3*2
4=48 ; 4*9 + 4*3
5=220 ; 5*48 - 5*4
6=1,350 6*220 + 6*5
7= 9408 7*1350 - 7*6
THEN 8 = 8*9408 + 8*7 = 75320
A is the answer domain is the x