15) The number of dollars Rock Photo charges to print photos varies linearly with the number of photos printed. For 12 prints they charge $7.33 and for 15 prints they charge $8.29.
a) Write the particular equation expressing dollars in terms of number of
prints.
b) How much would 35 prints cost?
c) If your bill is $12.77, how many prints did you purchase?
d) What does the dollar-intercept mean in the real world?
e) What is the cost per print? What characteristic of the graph provides this information?
f) Sketch the graph: