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3
avatar+383 

 Mrs. Solar receives the time estimates from each contractor. She wants to have the work done within 5 wk (200 work-hours) of when the work is started, and the sooner the better. She also wants to get a good deal.

 

(a) Contractor 1's time estimate:

210 h What is Contractor 1's total cost?

 

(b) Contractor 2's time estimate:

195 h What is Contractor 2's total cost?

 

(c) Contractor 3's time estimate:

185 h What is Contractor 3's total cost?

 

(d) Which contractor should Mrs. Solar choose? Explain your reasoning. 

 

Contractor 1's formula is y=50x+200

Contractor 2's formula is y=150+55x'

Contractor 3's formula is y=60x

hoiuu  Oct 26, 2018
 #1
avatar+90995 
+2

Just plug  210 [ for  x ]  into  y = 50x +200 

And 195  [for x ]  into y  = 150 + 55x

And 185 [ for x ]  into y =  60x

 

Evaluate all three

 

Whichever gives the minimum value is the contractor that should be chosen.....

 

 

cool cool cool

CPhill  Oct 26, 2018
 #2
avatar+383 
+1

Thats what i also thought, thank you!

hoiuu  Oct 26, 2018
 #3
avatar+90995 
+1

OK....good deal  !!!!

 

 

cool cool cool

CPhill  Oct 26, 2018

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