SOLUTION: Some One please help to solve this
The total cost curve of the number of copies photograph is linear. The total cost of 5 and 18 copies of photographs are Rs.80 and 116 respective
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Question 486771: Some One please help to solve this
The total cost curve of the number of copies photograph is linear. The total cost of 5 and 18 copies of photographs are Rs.80 and 116 respectively . Then the total cost for 10 copies of the photographs is
Answer is 93.85
I don’t know how to do ???? please Explain
Answer by chessace(471) (Show Source): You can put this solution on YOUR website!
Let c(x) be cost of x copies.
Linear means c(x) = ax + b
c(5) = 80
c(18) = 116
Find c(10)
a*5 + b = 80
a*18 + b = 116
Subtract 1 from 2:
13*a = 36
a = 36/13 = 2.77
2.77*5 + b = 80
b = 80-13.846 = 66.154
c(10) = 10 * 2.77 + 66.15
c(10) = 93.85
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