Aand b are two 2x2 matrices such that

a = 1 2
2 5

and

b = 5 -2
-2 1

a.) i) find ab

Keep in mind that, matrices multiplication is done by multiplying the left-row times the right-column, each row on the left matrix, will give you one row on the product matrix

thus 

Use a graph site then you will find your answer

If your asking how much altogether for 12 performance the answer will be 98,496.