The matrices show the number of indoor and outdoor volunteers in different age groups.

Men Women
18-39 40+ 18-39 40+
Indoor 17 35 Indoor 9 20
Outdoor 8 26 Outdoor 24 23
   
       

(a) Create one matrix that shows the total number of indoor and outdoor volunteers in different age
groups. Name the matrix T.
(b) What is the value of the element at
11 t
and what does that value indicate?

(c) Create a matrix by subtracting the women’s matrix from the men’s matrix. Name the matrix D.
(d) What is the value of the element at
d12
and what does that value indicate?