SOLUTION: A 3 min cab ride costs $3.00. A 6 min cab ride costs $4.80. Find a linear equation that models cost c as a function of distance d. A. c=0.60d+1.20 B. c=1.00d+1.80 C. c=0.8

Question 366550: A 3 min cab ride costs $3.00. A 6 min cab ride costs $4.80. Find a linear equation that models cost c as a function of distance d.
A. c=0.60d+1.20
B. c=1.00d+1.80
C. c=0.80d+1.20
D. d=0.60c+1.80
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi, 

Using the point-slope model for a linear expression c = mt + b

(3,3.00)(6,4.80)

m = 1.80/3 = .60

c = .60t + b (using (3,3.00) to solve for b

3.00 = .60*3  + b

1.20 = b

c = .60t + 1.20

answer A would be the correct choice 

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