Question

A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks:

Answer 1

y = 0.012x + 0.65

Number of pages       50.00      100.00    150.00    200.00  
Cost                             1.25          1.85        2.45        3.05

x = number of pages
y = cost

intervals of x = 50 pages
intervals of y = 0.60
0.60 / 50 = 0.012

y = 0.012x + 0.65

                      x        0.012*x                y  
0.012            50          0.60     0.65    1.25
0.012          100          1.20     0.65    1.85
0.012          150          1.80     0.65    2.45
0.012          200          2.40     0.65    3.05