Nature's Garden, a new restaurant situated on a busy highway in Pomona, California, specializes in a chef's salad selling for $$7.$ Daily fixed costs are $$1,100,$ and variable costs are $$4$ per meal. With a capacity of $550$ meals per day, the restaurant serves an average of $500$ meals each day.

$($a$.)$ Determine the current average cost per meal. Round your answer to two decimal places.

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$($b$.)$ A busload of $30$ Girl Scouts stops on its way home from the San Bernardino National Forest. The leader offers to bring them in if the scouts can all be served a meal for a total of $$159.$ The owner refuses, saying he would lose $$0\mathrm{.}90$ per meal if he accepted this offer. How do you think the owner arrived at the $$0\mathrm{.}90$ figure?

$\backslash$table$[[$Current average cost per meal,$$,0],[$Per meal revenue from Girl Scouts,,$0],[$Loss per meal,$$,0]]$

$($c$.)$ A local businessman on a break overhears the conversation with the leader and offers the owners a one$-$year contract to feed $300$ of the businessman's employees one meal each day at a special price of $$5\mathrm{.}10$ per meal.

Compute the net advantage $($disadvantage$)$ of accepting the contract.

Only use a negative sign with your answer to indicate a net disadvantage. Otherwise, do not use negative signs with answers.

Daily contribution from special order $$,0$