$\"\"$

The number of types of items sold by Sanjay is $\"\"$ .

The cost of each large statue is $\"\"$ .

The cost of each clock is $\"\"$ .

The cost of doll house furniture is $\"\"$ .

The cost of each chess piece is $\"\"$ .

The matrix form of number of items sold is $\"\"$ .

The matrix form of cost of items is $\"\"$ .

$\"\"$

(b) Find total income, if Sanjay sells all of the items.

Total income is $\"\"$ .

Total income:

$\"\"$

The cost is $\"\"$ .

$\"\"$

(a) The matrix form is $\"\"$ , $\"\"$ .

(b) The total income is $\"\"$ .