Need it asap the variables are the children and making food y=mx+b

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.

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3