Kindly provide solve with Numerical method, Not Matlab or any other programming code.

Question 3: [Marks:10] While performing an experiment the temperature of a rectangular heated plate is described by the following table. Table3: x,y vs t data a) Use multiple linear regression to fit these data in the table and find an expression for t(x,y). [5] b) If the plate is 30m long ( x dimension) and 20m wide ( y dimension) compute the average temperature using Trapezoidal Rule. (Use two segments along both axis) [5]