In one city, taxicabs charge passengers $2.00 for entering a cab ...

[shofmannx20]

In one city, taxicabs charge passengers $2.00 for entering a cab and then $0.40 for each one-quarter of a mile (or fraction thereof) that the cab travels. (There are additional charges for slow traffic and idle times, but these are not considered here). If x is the distance traveled in miles,  then C(x) is the cost of the taxi fare, where
 C(x) = $2.00,    if  x = 0, 
 C(x) = $2.40,    if  0 < x < 0.25, 
 C(x) = $2.80,    if  0.25 ≤ x < 0.5, 
 C(x) = $3.20,    if  0.5 ≤ x < 0.75, 
and so on. The graph of C is shown below.



At what values is the function C not differentiable?
◦ Function is differentiable for all x in the domain
◦ 0.25, 0.5, 0.75
◦ 0.25, 0.5, 0.75, 1.0, 1.25, 1.5.......
◦ 0.25, 0.5, 0.75, 1.0

[chevyboi1976]

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[shofmannx20]

YES! Correct, THANKS for helping me on my review

[31809pancho]

Thanks for the timely response, appreciate it