Asked by david t

The cost of making a dress is partly constant and partly varies with the amount of time it takes to make the dress.If the dress takes 3 hours to make ,it costs 2700 naira. If it takes 5 hours to make the dress, it costs 3100 naira. Find the cost if it takes one and half hours to make the dress.
Answered by Reiny
If you are given two points, do you know how to find the equation of that line?
This is the same type of problem
You are given (3, 2700) and (5, 3100)
Cost = mt + c , where t is the number of hours
(compare this to y = mx + b)

slope = (3100-2700)/(5-3) = 200
Cost = 200t + c
now plug in one of the points, pick the "easier" one (3,2700)
2700 = 200(3) + c
c = 2100

so <b>cost = 200t + 2100</b>
Now plug in t = 1.5

take over
Answered by Tarick
The cost C Of making a dress is partly a constant and partly varies as the amount of time,T, it takes to make. If it cost GH¢27 when it takes 3 hours and GH¢31 when it takes 5 hours. Find the cost
Answered by Deborah Apollos
I want to be a mathematician
Answered by Rejoice
I need this answer
Answered by Ayomide
I want to be like mathematical i want
Answered by Micheal
The cost at 1hr30mins is1520
Answered by Dàmzi
C=200, k=2100 , m=189200
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