Peter consumes comic books (c) and sodas (s). His utility over comic books and sodas is given by u(c,s) = −1 c − 1 s . His income is $10/weeks. Please do not be confused by the fact that the utility here is going to be a negative number, it has no significance in this problem (or in general). (a) If both comic books and sodas cost $1 each, what is his optimal consumption? (b) What is his demand function for comic books holding the price of sodas and income constant?