You must buy n raw materials in quantities given by the vector

q in R

n$,$ where qi

is the amount of raw material i that you must buy. A set of $3$ potential suppliers offer

the raw materials at prices given by the vectors x$,$ y$,$ z in R

n$.$ We will assume that all quantities and

prices are positive. If you must choose just one supplier, how would you do it$?$ Your answer should use

vector notation.