Question: Urgent please answer fast. Select the function that does not have a well-defined inverse. a. f:R-Z,f(x)=[x] b. f:R-R, f(x)=3x+4 c. f:R->R, f(x)=-2x+5 d. f:Z-Z, f(x)=[x+2]

Urgent please answer fast.
 Urgent please answer fast. Select the function that does not have
a well-defined inverse. a. f:R-Z,f(x)=[x] b. f:R-R, f(x)=3x+4 c. f:R->R, f(x)=-2x+5 d.

Select the function that does not have a well-defined inverse. a. f:R-Z,f(x)=[x] b. f:R-R, f(x)=3x+4 c. f:R->R, f(x)=-2x+5 d. f:Z-Z, f(x)=[x+2] donut store sells packages of 12 donuts. The store has made x donuts. How many complete packages does the store have for sale? a. [12] b 1x/12) c. [12] d. 18/121

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