A 2-mi cab ride costs $1.70. A 7-mi cab ride costs $3.70. Find a linear equation that models cost c as a function of distance d.

a.
c = 0.53d + 0.90
c.
c = 0.85d + 2.00
b.
c = 0.40d + 0.90
d.
d = 0.40c + 2.00