There is a total of 100 calories in 15 of Mei's favorite crackers. What is the total number of calories in 60 of Mei's favorite crackers?

Is the orthocenter of a triangle on the inside ?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

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?