Math
posted by Cynthia .
A 3mile cab ride cost $3.00. A 6mile cab ride cost $4.80. Find a linear equation that models cost c as a function of distance d

slope of linear equation is
(4.8  3)/(6  3) = 1.8/3 = 0.6
c  3 = 0.6(d  3)
c  3 = 0.6d  1.8
c = 0.6d + 1.2
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