5- (Total ofm a. tints} Steven only receives utility from eating fish {F} and drinking milk (M). His utility function is as followed: U(F,M)=F*5M1*5. Derive Steven's marginal utility from consuming Fish, his marginal utility from consuming Milk, and interpret the results. b. law} Rebel is a dog that enjoy both sleeping {5) and walking {W}. Her utility function is as followed: U(5,W}=W+55. Derive Rebel's marginal utility from sleeping, her marginal utility from walking, and interpret the results