A company has three appliance stores that sell washers, dryers, and ranges. Matrices W and R give the wholesale and retail prices of these items, respectively. Matrices N and D give the quantities of these items sold by the three stores in November and December, respectively.

Determine and interpret the following matrices:
(a) WN
(b) WD
(c) RN
(d) RD
(e) R - W
(f) (R - W)N
(g) (R - W)D
(h) N + D
(i) (R - W)(N + D)
(j) .95R

Transcribed Image Text:

Washers Dryers Ranges W =[ 300 450 ] 250 Washers Dryers Ranges R=[ 500 750 ] 450 Store 1 Store 2 Store 3 30 40 20 Washers 30 Dryers 35 Ranges 10 10 5 Store 1 Store 2 Store 3 20 50 30 Washers 30 10 20 Dryers Ranges 10 20 30