Activity 1 grade 9°



1. The cost of producing x tools by a company is given by 

C(x) = 1200 x + 5500  (in $)

a) What is the cost of 100 tools? 
b) What is the cost of 101 tools? 
c) Find the difference between the cost of 101 and 100 tools. 


2. Solve   and graphic

 Y =  5x + 13

Y  = 7x
Y = x -14

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