Three competing subcontractors are reporting their average work output to a large project leader for a new housing development Rock construction provided an equation where w represents the number of full weeks of work and a represents the estimated area of vinyl siding than can be installed in 100 ft units

Rosk Construction has the best work output.

Step-by-step explanation:

1. The unit rate for Rosk Construction is 62

(because a=62w)

2. The unit rate for Fosbert’s Construction is

65 (because 130/2=65; 260/4=65; &

390/6=65. Therefore the unit rate is 65).

3. The unit rate for Durable B Construction is

63 (because 63/1=63; 126/2=63; &

189/3=63. Therefore the unit rate is 63).

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