A student stuffs envelopes for extra income during her spare time. Her initial cost to obtain the necessary information for the job was $520. Each envelope costs S0.05 and she gets paid S0.09 per envelope stuffed. Let x represent the number of envelopes stuffed.
(a) Express the costC as a function of x.

erevenue R as a function of x.

b)

(c) Determine the value of x for which revenue equals cost
(d) Graph the equationsy=C(X) andy= R{x) on the same axes, and interpret the graph.

(a) C(x)=Cin dollars)
(Use integers or decimals tor any numbers in the expression)