please help answer 7. thank you

7. Lincoln Lights is considering hiring one of three software firms to implement a new IT system. Lincoln management has decided to evaluate the firms on three dimensions-reputation, skill level, and price. Weights for each dimension, as well as performance ratings for each of the firms ( 1= "poor" to 5= "excellent"), are shown in the following table: a. () Use the weighted-point evaluation system to calculate weighted performance scores for each of the software firms. Would the results change if each dimension had a weight of one-third