A First Course in Linear Algebra · Problem WILA.C10
Systems of Linear Equations — Robert Beezer
Mathematics — Linear Algebra · trail-mix-linear-computations
Problem
In Example TMP the first table lists the cost (per kilogram) to manufacture each of the three varieties of trail mix (bulk, standard, fancy). For example, it costs \$3.69 to make one kilogram of the bulk variety. Re-compute each of these three costs and notice that the computations are linear in character.