person. Each attendee receives breakfast, lunch, and free parking. The following are the costs incurred for putting on this event:

round your answers to two decimal places.

$

nonmember no$-$shows from $10\%$ to $30\%$ in increments of $2\%.$ In which interval of nonmember registrants does breakeven occur if the percentage of nonmember no$-$shows is $22\%?$

Breakeven appears in the interval of

to

registered nonmembers.

$($c$)$ Consider three scenarios:

places. For subtractive or negative numbers use a minus sign.

The highest profit is :

The lowest profit is $