1 i | ! Assume that xed costs are 30 and the variable costs are 4Q per unit. a) Write down expressions for T0, AC, and M C. b) Find the value of Q which minimizes AC. a)Tc=|:l (Simplify your answer. Type an expression using Q as the variable.) AC=I:| (Simplify your answer. Type an expression using 0 as the variable.) MC=D (Simplify your answer. Type an expression using Q as the variable.) b)Q=D (Use square root sign, integers or fractions.)