Consider the following cost function $(C)$:

Upper $C$ equals $0\mathrm{.}2q$ cubed minus $3q$ squared plus $80q$ plus Upper $FC=0\mathrm{.}2q3-3q2+80q+F.$

Part $2$

The equation for

average cost

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$(AC)is$:

ACequals$=0\mathrm{.}2q$ squared minus $3q$ plus $80$ plus StartFraction Upper $F$ Over $q$ EndFraction$0\mathrm{.}2q2-3q+80+Fq.$

$(Properly$ format your expression using the tools $in$ the palette. Hover over tools $to$ see keyboard shortcuts. $E.g.,$ a superscript can $be$ created with the ${?}^{(})$ character.$)$

Part $3$

The equation for

variable cost

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$(VC)is$:

VCequals$=0\mathrm{.}2q$ cubed minus $3q$ squared plus $80q0\mathrm{.}2q3-3q2+80q.$

$(Properly$ format your expression using the tools $in$ the palette.$)$

Part $4$

The equation for

marginal cost

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$(MC)is$:

MCequals$=$enter your response here