Toms cell phone bill is $29.99 a month. after he paid his bill for 3 months, the total was $89.97 the following represent this problem $29.99×3=-$89.97 why is this answer negative.​

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?