Using AHP and the Saaty scale, using the Saaty scale, assign relative importance

values to each pair of criteria. For each pair, if one criterion is moderately more

important than the other, assign a value of $3$; if one is strongly more important, assign

a value of $5$; if one is very strongly more important, assign a value of $7$; and if one

criterion is absolutely more important, assign a value of $9.$ If the criteria are equally

important, assign a value of $1$