$\"\"$

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The functions are $\"\"$ and $\"\"$ .

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$\"\"$ represents quantity supplied of T-shirts.

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$\"\"$ represents quantity demanded of T-shirts

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And $\"\"$ represents the price of T-shirts.

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(a)

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Find the equilibrium price and equilibrium quantity for T-shirts.

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Equilibrium Price is obtained $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in the equation $\"\"$ .

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$\"\"$

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Equilibrium price is $ $\"\"$ .

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Equilibrium quantity is obatined at equilibrium price.

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Equilibrium quantity is $\"\"$ T-shirts

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$\"\"$

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(b)

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Find the price when quantity demanded is greater than quantity supplied i.e. $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in the equation $\"\"$ .

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$\"\"$

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The demand should be greater than zero, hence $\"\"$ .

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$\"\"$

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(c)

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When quantity demanded is greater than quantity supplied, the price will eventually increased.

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$\"\"$

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(a) Equilibrium price is $16 and Equilibrium quantity is $\"\"$ T-shirts.

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(b) $\"\"$

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(c) The price will be eventually increased.