I need help on this and the person who answer this correctly gets a BRANLIST(answer if you know)​

Question and answers are in the attached picture. you so much in advance.

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.