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Below are the choices:
a) ABC phone service b) XYZ phone service
c)no difference d)depends on the number of days of the month
Below is the solution:
XYZ = 6.95 + 0.12(6)(60) = $50.15
ABC = 0.20(3)(60) + 0.09(3)(60) = 36.00 + 16.20 = $52.20
answer (a)