A television that normally sells for $459 is on sale 30% discount what is the price of the. Television

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.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Asap! i'm not good math and i'm lost.