Given the function `C(r)=4r^4+4r^3-48r^2`

Its `C`-intercept is

Its `r`-intercept(s) is/are

Remember that intercepts are points on a graph and thus need to be given in coordinate form.

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Box 1: Enter your answer as a point. Example: (2,5.5172)
Enter DNE for Does Not Exist

Box 2: Enter your answer a list of points separated with commas. Example: (1,2), (3.5172,5)
Enter DNE for Does Not Exist