A 3-mi cab ride costs $3.00. A 6-mi cab ride costs $4.80. Find a linear equation that models cost c as a function of distance d.

a. c = 0.80d + 1.20

b. c = 0.60d + 1.20

c. d = 0.60c + 1.80

d. c = 1.00d + 1.80

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Which is the equation of the graph?

a. y = - 1/2 |x| -3

b. y = 1/2 |x - 3|

c. y = 1/2 |x| -3

d. y = - 1/2 |x - 3|

1- the right answer is (b) c=0.6d+1.2

2- the right answer is (d) y=1/2|x-3|

3- f(12)=0 so the right answer is (b)

i mean in second one y= - 1/2|x-3|

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