need help answering

The manager of a furniture factory nds that it costs $2200 to produce 100 chairs in one day and $4400 to produce 300 chairs in one day. (a) Assuming that the relationship between cost and the number of chairs produced is linearl find a linear function C that models the cost of producing x chairs in one day. C(X) = (b) Draw a graph of C. C C l 0 000 l D 000 9000 9000 8000 5000 7000 7000 6000 6000 5000 5000 4 000 4 000 5000 3000 2 000 2 000 1000 1000 Q Chrome 03 Syslem ' 10m 0 100 200 300 400 500 500 x Q 100 200 300 400 500 600 333::fgalz1mcouns) need anemic 10000 10000 9000 9000 8000 8000 7000 7000 6000 6000 5000 5000 4000 4000 3000 3000 2000 2000 1000 1000 C) 100 200 300 400 500 600 x C) 100 200 300 400 500 600 What is the slope of this line? E (c) At what rate does the factory's cost increase for every additional chair produced