Rental cost for the auditorium: $,$$$150$

Registration Processing: $,$$$8\mathrm{.}50$ per person

Speaker Costs: $,3$@$$800=$$$2,400$

Continental Breakfast: $$4\mathrm{.}00$ per person

Lunch: $,$$$7\mathrm{.}00$ per person

Parking: $,$$$5\mathrm{.}00$ per person

$$

is $22\%?$

Breakeven appears in the interval of

to

registered nonmembers.

$($c$)$ Consider three scenarios:

required, round your answers to two decimal places. For subtractive or negative numbers use a minus sign.

The highest profit is $

The lowest profit is $